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ANSI/HI 1.1-1.2-2000 I . i. l:{ l~/· If, ~\P r;:~(

American National Standard for

Centrifugal Pumps for Nomenclature and Definitions

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9 Sylvan Way Parsippany, New Jersey 07054-3802 www.pumps.org

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Sponsor

Hydraulic Institute

www.pumps.org

Approved August 11, 1999

ANSI/HI 1.1-1.2-2000

.... American National Standard for

Centrifugal Pumps

for Nomenclature and Definitions

American National Standards Institute, Inc.

(\ Recycled ., paper

American National Standard

Published By

Approval of an American National Standard requires verification by ANSI that the requirements for due process, consensus and other criteria for approval have been met by the standards developer.

Consensus is established when, in the judgement of the ANSI Board of Standards Review, substantial agreement has been reached by directly and materially affected interests. Substantial agreement means much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made toward their resolution.

The use of American National Standards is completely voluntary; their existence does not in any respect preclude anyone, whether he has approved the standards or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards.

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Copyright © 2000 Hydraulic Institute All rights reserved.

No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without prior written permission of the publisher.

Printed in the United States of America

ISBN 1-880952-27-0

(

Contents Page

Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. vii

1 Centrifugal pumps

1.1 Types and nomenclature ...................................... .

1.1.1 Scope ................................................... .

1.1.2 Definition of a centrifugal pump .............................. .

1.1.3 Types of kinetic pumps ..................................... .

1.1.4 Impeller designs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.1.5 Construction drawings ...................................... 4

1.1.6 General information ........ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

1.1.7 Centrifugal pumps nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

1.2 Definitions................................................. 55

1.2.1 Rate of flow (capacity) .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

1.2.2 Speed.................................................. 55

1.2.3 Head................................................... 55

1.2.4 Condition pOints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

1.2.5 Suction conditions ...................................... , .. 58

1.2.6 Power.................................................. 58

1.2.7 Pump pressures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

1.2.8 Impeller balancing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Appendix A References.......................................... 62

Appendix B Index ................................... ·........... 63

Figures

1.1 - Kinetic type pumps ....... : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 1

1.2 - Comparison of pump profiles ................................... 3

1.3 - Radial flow pump. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.4 - Mixed flow pump. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3

1.5 - Axial flow pump ............................................. 4

1.6 - Overhung impeller - close couple single stage - end suction .......... 4

1.7 - Overhung impeller - close coupled single stage - diffuser style-end suction - submersible ............................. : . . . . . . . . . . . . 5

1.8 - Overhung impeller - close coupled single stage - submersible . . . . . . . . 6

1.9 - Overhung impeller - close coupled single stage - in-line (showing seal and packing) ......................................... 7

iii

1.10 - Overhung impeller - separately coupled single stage - in-line -flexible coupling. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 8

1.11 - Overhung impeller - separately coupled single stage - in-line -rigid coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9

1.12 - Overhung impeller - separately coupled single stage -frame mounted .. ' ................. : . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10

1.13 - Overhung impeller - separately coupled single stage -frame mounted - lined pump. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11

1.14 - Overhung impeller - separately coupled single stage -centerline support - API 610 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 12

1.15 - Overhung impeller - separately coupled single stage -frame mounted - ANSI 873.1 ...................................... 13

1.16 - Overhung impeller - separately coupled single stage -wet pit volute ................................................. " 14

1.17 - Overhung impeller - separately coupled single stage -axial flow - horizontal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 15

1.18 - Impeller between bearings - separately coupled -single stage - axial (horizontal) split case. . . . . . . . . . . . . . . . . . . . . . . . . . . .. 16

1.19 - Impeller between bearings - separately coupled -single stage - raoial (vertical) split case ., . . . . . . . . . . . . . . . . . . . . . . . . . . .. 17

1.20 - Impeller between bearings - separately coupled -multistage axial (horizontal) split case. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 18

1.21 - Impeller between bearings - separately coupled -multistage radial (vertical) split case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 19

1.22 -Impeller between bearings - separately coupled-multistage radial (vertical) split - double casing ......................... 20

1.23 - Overhung impeller - separately coupled single stage -frame mounted - mixed flow ......................... ; ............. 21

1.24 - Regenerative turbine - side channel single stage ................. 22

1.25 - Regenerative turbine - peripheral single stage. . . . . . . . . . . . . . . . . . . 22

1.26 - Regenerative turbine - impeller between bearings - two stage . . . . . . 23

1.27 - Overhung impeller - separately coupled single stage-frame mounted - self-priming ...................................... 24

1.28 - Pump shaft rotation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 26

1.29 - Horizontal pump rotation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

1.30 - Vertical pump rotation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 26

1.31 - Overhung impeller - separately coupled - single stage-frame mounted. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 39

1.32 - Overhung impeller - separately coupled - single stage -frame mounted - pump on base plate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

1.33 - Overhung impeller - separately coupled single stage -centerline mounted .............................................. 41

1.34 - Overhung impeller - separately coupled single stage -centerline mounted - pump on base plate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

iv

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1.35 - Overhung impeller - separately coupled single stage -centerline mounted (top suction) .................................... 43

1 .36 - Overhung impeller - separately coupled single stage -centerline mounted pump on base plate (top suction) .................... 44

1.37 - Impeller between bearings - separately coupled -single stage axial (horizontal) split case pump on base plate .............. 45

1.38 - Impeller between bearings - separately coupled -single stage axial (horizontal) split case ............................... 46

1.39 - Overhung impeller - close coupled - single stage - end suction ..... 47

1.40 - Overhung impeller - separately coupled - single stage -frame mounted (vertically mounted) .................................. 47

1.41 - Stuffing-box area .......................................... 48

1.42 - Dimensions for types JM and JP alternating current face-mounting close-coupled pump motors having rolling contact bearings . . . 50

1.43 - Standard dimensions for HI - NEMA type HP and HPH vertical solid-shaft motors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

1.44 - Datum elevations for various pump designs ..................... 55

1.45 - High-energy versus low-energy pumps (metric) .................. 59

1.46 - High-energy versus low-energy pumps (US units) ................ 60

Tables

1.1 - Centrifugal pump nomenclature - alphabetical listing .............. 27

1.2 - Centrifugal pump nomenclature - numerical listing ................ 35

1.3 - Dimensions for Type JM alternating-current face-mounting close-coupled pump motors ........................................ 51

1.4 - Dimensions for Type JP alternating-current face-mounting close-coupled pump motors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

1.5 - Standard dimensions for HI - NEMA Type HP and HPH vertical solid-shaft motors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

1.6 - Symbols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

1.7 - Subscripts ................................................ 57

v

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Foreword (Not part of Standard)

Purpose and aims of the Hydraulic Institute

The purpose and aims of the Institute are to promote the continued growth and well-being of pump manufacturers and further the interests of the public in such matters as are involved in manufacturing, engineering, distribution, safety, transportation and other problems of the industry, and to this end, among other things:

a) To develop and publish standards for pumps;

b) To collect and disseminate information of value to its members 'and to the public;

c) To appear for its members before governmental departments and agencies and other bodies in regard to matters affecting the industry;

d) To increase the amount and to improve the quality of pump service to the public;

e) To support educational and research activities;

f) To promote the business interests of its members but not to engage in business of the kind ordinarily carried on for profit or to perform particular services for its members or individual persons as distinguished from activities to improve the business conditions and lawful interests of all of its members;

Purpose of Standards

1) Hydraulic Institute Standards are adopted in the public interest and are designed to help eliminate misunderstandings between the manufacturer, the purchaser and/or the user and to assist the purchaser in selecting and obtaining the proper product for a particular need.

2) Use of Hydraulic Institute Standards is completely voluntary. Existence of Hydraulic Institute Standards does not in any respect preclude a member from manufacturing or selling products not conforming to the Standards.

Definition of a Standard of the Hydraulic Institute

Quoting from Article XV, Standards, of the By-Laws of the Institute, Section B:

"An Institute Standard defines the product, material, process or procedure with reference to one or more of the following: nomenclature, composition, construction, dimensions, tolerances, safety, operating characteristics, performance, quality, rating, testing and service for which designed."

Comments from users

Comments from users of this Standard will be appreciated, to help the Hydraulic Institute prepare even more useful future editions. Questions arising from the content of this Standard may be directed to the Hydraulic Institute. It will direct all such questions to the appropriate technical committee for provision of a suitable answer.

If a dispute arises regarding contents of an Institute publication or an answer provided by the Institute to a question such as indicated above, the point in question shall be referred to the Executive Committee of the Hydraulic Institute, which then shall act as a Board of Appeals.

vii

Revisions

The Standards of the Hydraulic Institute are subject to constant review, and revisions are undertaken whenever it is found necessary because of new developments and progress in the art. If no revisions are made for five years, the standards are reaffirmed using the ANSI canvass procedure.

Units of Measurement

Metric units of measurement are used; and corresponding US units appear in brackets. Charts, graphs and sample calculations are also shown in both metric and US units.

Since values given in metric units are not exact equivalents to values given in US units, it is important that the selected units of measure to be applied be stated in reference to this standard. If no such statement is provided, metric units shall govern.

Consensus for this standard was achieved by use of the Canvass Method

The following organizations, recognized as having an interest in the standardization of centrifugal pumps were contacted prior to the approval of this revision of the standard. Inclusion in this list does not necessarily imply that the organization concurred with the submittal of the proposed standard to ANSI.

A.R. Wilfley & Sons ANSIMAG Inc. Bechtel Corp. Black & Veatch Brown & Caldwell Camp Dresser & McKee, Inc. Carver Pump Company Cheng Fluid Systems, Inc. Crane Company, Chern pump Div. Cuma SA Dean Pump Div., Metpro Corp. DeWante & Stowell Dow Chemical EnviroTech Pumpsystems Essco Pump Division Exeter Energy Ltd. Partnership Fairbanks Morse Pump Corp. Fluid Sealing Association Franklin Electric GKO Engineering Grundfos Pumps Corp. Illinois Dept. of Transportation IMC - Agrico Chemical Corp. Ingersoll-Dresser Pump Company ITT Fluid Handling (8 & G) ITT Fluid Technology ITT Industrial Pump Group Iwaki Walchem Corp. J.P. Messina Pump & Hydr. Cons. John Crane, Inc. Krebs Consulting Service

viii

KSB, Inc. M.W. Kellogg Company Malcolm Pirnie, Inc. Marine Machinery Association Marley Pump Company Marshall Engineered Products

Company Montana State University MWI, Moving Water Industries Oxy Chern Pacer Pumps Paco Pumps, Inc. Pinellas Cty, Gen. Servo Dept. The Process Group, LLC Raytheon Engineers & Constructors Reddy-Buffaloes Pump, Inc. Robert Bein, Wm. Frost & Assoc. Scott Process Equipment Corp. Settler Supply Company Skidmore South Florida Water Mgmt. Dist. Sta-Rite Industries, Inc. Sterling Fluid Systems (USA), Inc. Ston~ & Webster Engineering Corp. Sulzer Bingham Pumps, Inc. Summers Engineering, Inc. Systecon, Inc. Val-Matic Valve & Mfg. Corp. Yeomans Chicago Corp. Zoeller Engineered Products

HI Centrifugal Pump Types and Nomenclature - 2000

~ 1 Centrifugal pumps

1.1 Types and nomenclature 1.1.2 Definition of a centrifugal pump

Kinetic pumps may be classified by such methods as impeller or casing configuration, end application of the pump, specific speed or mechanical configuration. The method used in Figure 1.1 is based primarily on mechanical configuration.

A centrifugal pump is a kinetic machine converting mechanical energy into hydraulic energy through centrifugal activity.

1.1.3 Types of kinetic pumps

1.1.1 Scope Centrifugal pumps are most commonly typed by their general mechanical configuration. The broadest characteristics, which include virtually all centrifugal pumps, are the following:

This Standard is for centrifugal and regenerative turbine pumps of all industrial/commercial types except vertical single and multistage diffuser types. It includes types and nomenclature.

Kinetic

Centrifugal

Overhung impeller

End suction ~Iose coupled -C (Including su-b-m-e-rs-ib-I-e-s)-- Fig. 1.6, 1.7, 1.8 smgle or two stage In-line -------- Fig. 1.9

Separately coupled single or two stage

In-line ANSI 873.2 Fig. 1.10, 1.11

Frame mounted----- Fig. 1.12, 1.13, 1.23,

Centerline support 1.27 API-610 Fig. 1.14

Frame mounted ANSI 873.1

--- Fig. 1.15

Wet pit volute Fig. 1.16

Axial flow impeller (propeller) . (horiz. or vertical) - Fig 1.17

[Canned motor See HI 5.1-5.6

Sealless ---1 Magnetic drive See HI 5.1-5.6

Separately ... . coupled ---r AXial (horlz.) split case -- Fig. 1.18

Impeller { single stage L between Radial (vertical) split case - Fig. 1.19

bearings Separately I d ;-c Axial (horiz.) split case -- Fig. 1.20

coupe multistage

Radial (vertical) split case - Fig. 1.21, 1.22

----- Fig. 1.25

-[

Single stage

-{

Peripheral

Regenerative M It" t -------turbine u IS age Fig. 1.26

-------.,------ Fig. 1.24 Side channel

------------I[ Reversible centrifugal Special effect

Rotating casmg (pltOt tube)

Figure 1.1 - Kinetic type pumps


1.1.3.1 Overhung impeller type

In this group, the impeller (or impellers) is mounted on the end of a shaft that is cantilevered or "overhung" from its bearing supports.

These pumps are either close coupled, where the impeller is mounted directly on the driver shaft; or separately coupled, where the impeller is mounted on a separate pump shaft supported by its own bearing.

1.1.3.2 Impeller between bearing type

In this group, the impeller (or impellers) is mounted on a shaft with bearings at both ends. The impeller is mounted "between bearings."

These pumps are further separated as single stage and multistage configurations.

1.1.3.3 Regenerative turbine type

A low rate of flow, high head pump utilizing p.eripheral or side channel vanes or buckets on a rotating impeller to impart energy to the pumped liquid. The liquid travels in a helical pattern through the impeller vanes and accompanying flow passages, with the liquid pressure increasing uniformly through the passages from inlet port to outlet port.

1.1.3.4 Special variations

In addition to the mechanical configuration described previously, there are some special variations of pumps that are included in these general types but which stand separately because of some special characteristic. Examples of these are:

a) Sewage pumps with nonclog impellers;

b) Abrasive pumps which may be made of hard metals or may have rubber lining;

c) Heating circulating pumps which are fractional horsepower units for home heating systems;

d) Canned motor or magnetic drive pumps which do not require mechanical seals or packing.

1.1.4 Impeller designs

Impeller designs are grouped as either radial flow, mixed flow, or axial flow depending on their hydraulic geometry. These are further described as follows:

2

1.1.4.1 Specific speed

To understand impeller groupings better, a discussion ~ of specific speed may be helpful.

Specific speed is a correlation of pump rate of flow head, and speed at optimum efficiency, which c1assi~ fies the pump impellers with respect to their geometric similarity.

Specific speed is a number usually expressed as:

nQ·5 NS=

H·75

Where:

NS = Pump specific speed;

n = Rotative speed in revolutions per minute;

Q = Rate of flow in m3/h (gpm) at optimum efficiency;

H = Total head in meters (feet) per stage

The specific speed of an impeller is defined as the rev- .. ?Iutiollns per minute at which a geometrically similar .. Impe er would run if it were of such a size as to discharge one m3/hr (gpm) against one meter (foot) head.

Specific speed is not strictly dimensionless as indicated in Table 1.6, but those dimensions are not shown for convenience.

Specific speed is indicative of the shape and characteristics of an impeller. It has been found that the ratios of major dimensions vary uniformly with specific speed. Specific speed is useful to the designer in predicting proportions required and to the application engineer in checking suction limitations of pumps. Proportions vary with specific speed as shown in Figure 1.2.

Pumps are traditionally divided into three types: radial flow, mixed flow, and axial flow. However, it can be seen from Figure 1.2 that there is a continuous change from the radial flow impeller, which develops pressure principally by the action of centrifugal force, to the axial flow impeller, which develops most of its head by the propelling or lifting action of the vanes on the liquid.

In the specific speed range of approximately 1200 to 7000 (1000 to 6000), double suction impellers areA used as frequently as single suction impellers. ~


Values of specific speeds

us Units US Units I I

o 0 0 0 0 0 o 0 0 0 0 0 I!) CD !'-como

0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 00 0 0

~ 0 0 0 0 0 0 0 00 0 0 C'l C') '<t I!) CD !'- co m~ I!) 0 ,.... C'l

-::- Impeller shrouds

- Impeller shrouds

Impeller hub

Radial-vane area Francis-vane area Mixed-flow area Axial-flow area

_ Axis of rotation

Metric I

o o <0

a a a

o o o C'l

o o o C')

o o ~

o o a a

Metric I

o o o o C'l

NOTE: Profiles of several pump impeller designs ranging from low specific speed radial flow on the left to a high specific speed axial flow on the right. placed according to where each design fits on the specific speed scale.

Figure 1.2 - Comparison of pump profiles, single suction pumps

Figure 1.3 - Radial flow pump

1.1.4.2 Suction specific speed

Suction specific speed is an index number for a centrifugal pump similar. to discharge specific speed and is used to define its suction characteristic. See HI 1.3-2000 Section 1.3.4.1.15.

1.1.4.3 Radial flow

Pumps of this type with single inlet impellers usually have a specific speed below 4900 (4200). and with

~. double suction impellers. a specific speed below 7000 ~ (6000). In pumps of this type, the liquid enters the - impeller at the hub and flows radially to the periphery

(see Figure 1.3).

~ SHAFT

Figure 1.4 - Mixed flow pump

1.1.4.4 Francis vane

Radial flow impellers with double curvature of the vanes at the inlet.

1.1.4.5 Mixed flow

This type of pump has a single inlet impeller with the flow entering axially and discharging in an axial and radial direction. Pumps of this type usually have a specific speed from 4900 to 10.500 (4200 to 9000) (see Figure 1.4).

3


1.1.4.6 Axial flow

A pump of this type, sometimes called a propeller pump, has a single inlet impeller with the flow entering axially and discharging nearly axially. Pumps of this type usually have a specific speed above 10,500 (9000) (see Figure 1.5).

Figure 1.5 - Axial flow pump

Casing 2 Impeller

6 Shaft

14 Sleeve, shaft

26 Screw, impeller

32 Key, impeller

1.1.5 Construction drawings

The construction drawings on the following pages 0 were prepared to provide a means for identifying the various pump types covered by the HI Standards and also to serve as the basis for a common language between the purchaser, manufacturer and specification writer.

Generally the individual part names on these drawings are numbered such that rotating parts have been assigned even numbers while non-rotating parts have been assigned odd numbers. There are a few exceptions however.

In cases where a pump may use two or more parts that are of the same generic type but different geometries (e.g., gaskets) this difference is indicated by the addition of a letter suffix to the item number (e.g., 73A, 738, etc.).

71 6 73 32 I 2

40 Deflector

65 Seal, mechanical, stationary element

69 Lockwasher

71 Adapter

73 Gasket

80 Seal, mechanical rotating element , Figure 1.6 - Overhung impeller - close couple single stage - end suction

4

222

16

31

5 2 9

2

5

6

9

16

18

24


Impeller 31 Hou~ng,bearinginboa~

Diffuser 35 Cover, bearing, inboard Shaft 89 Seal, mechanical

Cover, suction 201 Housing, stator

Bearing, inboard 222 Assembly, rotor core

Bearing, outboard 223 Assembly, stator core Nut, impeller

Figure 1.7 - Overhung impeller - close coupled single stage - diffuser style - end suction - submersible

18 6

201

223

35

89

89

24

5


201 18

223

222

6 16 31

35 t 89

89

24 2

7

1 Casing 24 Nut, impeller

2 Impeller 31 Housing, bearing, inboard

6 Shaft 35 Cover, bearing, inboard

7 Ring, casing 89 Seal, mechanical

8 Ring, impeller 201 Housing, stator

16 Bearing, inboard 222 Assembly, rotor cover

18 Bearing, outboard 223 Assembly, stator core

Figure 1.8 - Overhung impeller - close coupled single stage - submersible

6

<t

2

11

13

14


40 ~71

14 13

17 89

11 73

2

Casing 17 Gland

Impeller 40 Deflector

Cover, seal chamber 71 Adapter

Packing 73 Gasket, casing

Sleeve, shaft 89 Seal, mechanical

Figure 1.9 - Overhung impeller - close coupled single stage - in-line (showing seal and packing)

7


33 1 Casing

2 Impeller C 18 6 Shaft, pump

11 Cover, seal chamber 99 14 Sleeve, shaft

-16 Bearing, inboard 6 17 Gland

18 Bearing, outboard 16 33 Cap, bearing, outboard

40 Deflector 14

42 Coupling half, driver

17 44 Coupling half, pump

47 Seal, bearing cover, inboard

89 49 Seal, bearing cover, outboard 73 Gasket

II 81 Pedestal, driver

88 Spacer, coupling

2 89 Seal

99 Housing, bearing

Figure 1.10 - Overhung impeller - separately coupled single stage - in-line - flexible coupling t 8


86

70

81

66 46

32 6

pq '-'-

117

11

25 8

1 Casing 46 Key, coupling

2 Impeller 66 Nut, shaft adjusting

6 Shaft, pump 70 Coupling, shaft

7 Ring, casing 73 Gasket

8 Ring, impeller 81 Pedestal, driver

11 Cover, seal chamber 86 Ring, thrust, split

24 Nut, impeller 89 Seal

27 Ring, cover 117 Bushing, pressure reducing

32 Key, impeller

Figure 1.11 - Overhung impeller - separately coupled single stage - in-line - rigid coupling

9


c 25

~~L_28 24

9

t 73 40 2 73

Casing 27 Ring, stuffing-box cover 2 Impeller 28 Gasket, impeller screw 6 Shaft, pump 29 Ring, lantern 9 Cover, suction 32 Key, impeller

13 Packing 35 Cover, bearing, inboard 14 Sleeve, shaft 37 Cover, bearing, outboard 16 Bearing, inboard 38 Gasket, shaft sleeve 17 Gland 40 Deflector 18 Bearing, outboard 47 Seal, bearing cover, inboard 19 Frame 49 Seal, bearing cover, outboard 22 Locknut, bearing 69 Lockwasher 24 Nut, impeller 73 Gasket 25 Ring, suction cover 78 Spacer, bearing

Figure 1.12 - Overhung impeller - separately coupled single stage - frame mounted

10


1C Casing, suction half 22 Locknut, bearing

1D Casing, gland half 35 Cover, bearing, inboard

2 Impeller 37 Cover, bearing, outboard

6 Shaft 40 Deflector

9 Cover, suction 47 Seal, bearing cover, inboard

16 Bearing, inboard 49 Seal, bearing cover, outboard

18 Bearing, outboard 65 Seal, mechanical, stationary element

19 Frame 66 Nut, shaft adjusting

21A Liner, suction cover 71 Adapter

21B Liner, cover 80 Seal, mechanical, rotating element

21C Liner, casing, suction half 99 Housing, bearing

21D Liner, casing, gland half

Figure 1.13 - Overhung impeller - separately coupled single stage - frame mounted - lined pump

11


12

Casing

2 Impeller

6 Shaft, pump

7 Ring, casing

14

8A Ring, impeller, eye

8B Ring, impeller, hub

11 Cover

14 Sleeve, shaft

16 Bearing, inboard

18 Bearing, outboard 22 Locknut, bearing

24 Nut, impeller

27 Ring, stuffing-box cover

32 Key, impeller

35 I

40A I 16

45 99 73C 22

60 18 69

35 Cover, bearing, inboard

37 Cover, bearing, outboard

40A Deflector, inboard

40B Deflector, outboard

45 Cover, oil bearing cap

46 Key, coupling

60 Ring, oil

63 Bushing, cover

69 Lockwasher

73A Gasket, casing

408 46

73C Gasket, outboard cover, bearing housing

89 Seal

99 Housing, bearing

Figure 1.14 - Overhung impeller - separately coupled single stage - centerline support - API 610


Casing 37 Cover, bearing, outboard 2 Impeller 46 Key, coupling 6 Shaft, pump 47 Seal, bearing cover, inboard

11 Cover, seal chamber 49 Seal, bearing cover, outboard 16 Bearing, inboard 69 Lockwasher 17 Gland 71 Adapter 18 Bearing, outboard 73 Gasket 19 Frame 89 Seal 22 Locknut, bearing

Figure 1.15 - Overhung impeller - separately coupled single stage - frame mounted - ANSI 873.1

13


44

49

22 42

81

37 1 Casing

99 2 Impeller

6 Shaft, pump

9 Cover, suction

10 Shaft,head

18 Bearing, outboard

22 Locknut, bearing 26 Screw, impeller

18 32 Key, impeller e 47 37 Cover bearing, outboard 39 Bushing, bearing

39 42 Coupling half, driver 44 Coupling. half, pump

193 47 Seal, bearing cover

6 inboard

49 Seal, bearing cover, 32 outboard

70 Coupling, shaft

71 Adapter

81 Pedestal, driver

105 99 Housing, bearing 101 Pipe, column

105 Elbow, discharge

193 Retainer, bearing 209 Strainer

Figure 1.16 - Overhung impeller - separately coupled single stage - wet pit volute

14

1 Casing 2 Impeller 6 Shaft 13 Packing 14 Sleeve, shaft 16 Bearing, inboard 17 Gland 18 Bearing, outboard 19 Frame 22 Locknut, bearing 23 Base plate 26 Screw, impeller


SUCTION , 17 13 29 73 57 32 2 73 26 1

1 39 2 32 26

Overhung Propeller

57 32 2 73 1 39

Propeller Suported Between Bearings

29 Ring, lantern 32 Key, impeller 35 Cover, bearing, inboard 37 Cover, bearing, outboard 39 Bushing, bearing 40 Deflector 57 Elbow, suction 68 Collar, shaft 69 Lockwasher 73 Gasket 99 Housing, bearing

Figure 1.17 - Overhung impeller - separately coupled single stage - axial flow - horizontal

15


16

6

22 18 40 32 40

1A

1B

2

6

7

8

14

16

18

20

Casing, lower half 22 Locknut

Casing, upper half 31 Housing, bearing inboard

Impeller 32 Key, impeller

Shaft 33 Housing, bearing outboard

Ring, casing 35 Cover, bearing inboard

Ring, impeller 37 Cover, bearing outboard

Sleeve, shaft 40 Deflector

Bearing, inboard 65 Seal, mechanical stationary element

Bearing, outboard 80 Seal, mechanical rotating element

Nut, shaft sleeve 123 Cover, bearing end

Figure 1.18 -Impeller between bearings - separately coupled - single stage - axial (horizontal) split case

22

1

2

6

7

8

11

14

16

18A

18B

20


16 6 50

60 31 40

Casing 22 Locknut, bearing

Impeller 31 Housing, bearing, inboard Shaft 32 Key, impeller

Ring, casing 33 Housing, bearing, outboard

Ring, impeller 37 Cover, bearing, outboard

Cover 40 Deflector

Sleeve, shaft 50 Locknut, coupling

Bearing, inboard, sleeve 60 Ring, oil

Bearing, outboard, sleeve 65 Seal, mechanical, stationary element

Bearing, outboard, ball 80 Seal, mechanical, rotating element

Nut, shaft sleeve

Figure 1.19 -Impeller between bearings - separately coupled - single stage - radial (vertical) split case

17


46 6 I ' I !

I I

18

41 18 43 123

I I 40 16 31 60 40 73 117 14 78 2 11714322 14 117 8 7 2328763 lA 4018 33 60 78 18 22 60 73

1A

1B

2

6

7

8

14

16 . 18

22

31

32

Casing, lower half 33 Housing, bearing, outboard

Casing, upper half 40 Deflector

Impeller 41 Cap, bearing, inboard

Shaft, pump 43 Cap, bearing, outboard

Ring, casing 46 Key coupling

Ring, impeller 60 Ring, oil

Sleeve, shaft 63 Bushing

Bearing, inboard 73 Gasket

Bearing, outboard 78 Spacer, bearing

Locknut, bearing 117 Bushing, pressure reducing

Housing, bearing, inboard 123 Cover, bearing end

Key, impeller

Figure 1.20 - Impeller between bearings - separately coupled - multistage axial (horizontal) split case


35

22 18 40 83 80 32 7 5 2 83 16 6

1

2

5

6

7

16

18

22

31

32

33

Casing 35 Cover, bearing, inboard

Impeller 37 Cover, bearing, outboard

Diffuser 40 Deflector

Shaft 56 Disc or drum, balancing

Ring, casing 63 Bushing, stuffing-box

Bearing, inboard 65 Seal, mechanical, stationary element

Bearing, outboard 73 Gasket

Locknut, bearing 80 Seal, mechanical, rotating element

Housing, bearing, inboard 83 Stuffing-box

Key, impeller 123 Cover, bearing end

Housing, bearing, outboard

Figure 1.21 - Impeller between bearings - separately coupled - multistage radial (vertical) split case

19

HI Centrifugal Pu~p Types and Nomenclature - 2000

123

1A

1B

2

6

7

16

18

20

33 18 40 40 31 16 40 6

7 1 A 32 117 2 117

Casing, lower half 31 Housing, bearing, inboard

Casing, upper half 32 Key, impeller Impeller 33 Housing, bearing, outboard

Shaft, pump 40 Deflector

Ring, casing 117 Bushing, pressure reducing bushing

Bearing, inboard 123 Cover, bushing end

Bearing, outboard

Figure 1.22 - Impeller between bearings - separately coupled - multistage radial (vertical) split - double casing

(

\

25

• 1

2

6

8

9

11

13

14

16

17

18

19

22

24

25

~ """.


. / ,/ ',' . ,/ '// ......

24

Casing 29

Impeller 32

Shaft 33

Ring, impeller 35

Cover, suction 38

Cover, stuffing-box 40

Packing 43

Sleeve, shaft 47

Bearing, inboard 49

Gland 67

Bearing, outboard 69

Frame 73

Locknut, bearing 78

Nut, impeller 169

Ring, suction cover

67 99A 99 125 FAR SInE:

Ring, lantern

Key, impeller

1 40 6 1

1

I" 1 53 1

1

1

1

1

1

1

1

1

1

1

1

Housing, bearing, outboard

Cover, bearing, inboard

Gasket, shaft sleeve

Deflector

Cap, bearing, outboard

Seal, bearing cover, inboard

Seal, bearing cover, outboard

Shim, frame liner

Lockwasher

Gasket

Spacer, bearing

Seal, bearing housing

Figure 1.23 - Overhung impeller - separately coupled single stage - frame mounted - mixed flow

21

HI Centrifuql'll Pump Types and Nomenclature - 2000

1"

2 9

14 24

22

Casing

Impeller

Cover, suction

Sleeve, shaft

Nut, impeller

o o

o o

/

CD /

-, I I I I I

I-it-+t-- - _1-1\ lL~h-"'-""""'>=f1r---,l!:77:~~ - __ J

Figure 1.24 - Re,generative turbine - side channel single stage

26 32 40 65

Screw, impeller 66 Nut, adjustment

Key, impeller 71 Adapter

Deflector 80 Seal, mechanical, rotating

Seal, mechanical, stationary element

element 119 Ring -"0"

SUCTION

~../.~J -I-t-litl ftttH-Ht - ..

2

'~~~+-____ --32

1~m.~~l-~}-----26 of --+-1 - --- --- --- --- --+-1-+

14

73

Figure 1.25 - Regenerative turbine - peripheral single stage

46

2

6

13

16

17

18


6 16 80 32 2 25 13 17 40 18 22

Casing 22 Locknut, bearing

Impeller 25 Ring, channel

Shaft 32 Key, impeller

Packing 40 Deflector

Bearing, inboard 46 Key, coupling

Gland 80 Seal, mechanical

Bearing, outboard

Figure 1.26 - Regenerative turbine - impeller between bearings - two stage

23


2

5

6

9

11

16

18

32

24

Casing 37 Cover, bearing, outboard

Impeller 40 Deflector

Diffuser 46 Key, coupling

Shaft 47 Seal, bearing cover, inboard

Cover, suction 49 Seal, bearing cover, outboard

Cover, seal chamber 73 Gasket

Bearing, inboard 89 Seal

Bearing, outboard 99 Housing, bearing Key, impeller

Figure 1.27 - Overhung impeller - separately coupled single stage':" frame mounted - self-priming

1.1.6

t 1.1.6.1

General information

Size of centrifugal pumps

,

The diameter of the discharge opening of a centrifugal pump determines its nominal size only and does not definitely fix its rate of flow. It is recommended that the required rate of flow be specified.

1.1.6.2 Duplicate performance pump

A duplicate pump is one in which the performance characteristics are the same as another within the variations permitted by these standards, and parts are of the same type; but, by reason of improved design and/ or materials, mounting dimensions and parts are not necessarily interchangeable.

1.1.6.3 Dimensionally interchangeable pump

An interchangeable pump is one in which the mounting dimensions are such that the replacement pump can be mounted on the existing bedplate and match existing piping and driver, with hydraulic characteristics and materials to be specified. Interchangeability may involve some variation, not necessarily significant, as a result of manufacturing tolerances.

1.1.6.4 Identical performance and dimensional pump

An identical pump is a duplicate of, and in addition is interchangeable with, a s'pecific pump. Where it is intended that a pump is to be identical in all respects including parts, mountings, connecting flange dimensions and materials, it should be identified as "identical with Pump No. __ ", not "duplicate."

1.1.6.5 Definitions for bare rotor and rotating "assembly

1.1.6.5.1 Single stage, axially (horizontally) split, single or double suction centrifugal pump

1.1.6.5.1.1 Bare rotor


impeller ring(s);

shaft sleeves.

It shall not include such items as mechanical seal(s), gland(s), lantern ring(s), packing, water shield(s), oil thrower(s), or oil ring(s), bearings, bearing appurtenances, coupling, pulley, or sheave.

1.1.6.5.1.2 Rotating assembly

A rotating assembly shall consist of a bare rotor plus casing wearing rings (where used), casing bushings (where used), bearings, and all other stationary or rotating parts required to be assembled over the shaft.

A rotating assembly shall include the following (where used):

packing and gland(s);

mechanical seals(s) and gland(s);

water shield(s);

oil thrower(s);

oil ring(s);

bearing housing cover(s).

It shall not include coupling, pulley, or sheave, nor shall it include bearing housings except when these are of a design that requires that they be assembled prior to mounting of the bearings.

1.1.6.5.2 Multistage, axially split, single or double suction centrifugal pumps

1.1.6.5.~.1 Bare rotor

A bare rotor shall consist of the following as an assembly (where used):

a shaft with all nuts;

A bare rotor shall consist of the following as an assem- keys; bly (where used):

a shaft with all nuts;

keys;

~- impeller;

impellers;

impeller rings;

shaft sleeves;

25


interstage sleeve(s);

balancing drum and/or disc.

It shall not include such items as mechanical seal(s), gland(s), lantern ring(s), packing, deflector(s), oil thrower(s), oil rings(s), bearings, bearing appurtenances, coupling, pulley or sheave. A bare rotor may have to be disassembled for installation in the pump.

1.1.6.5.2.2 Rotating assembly

A· rotating assembly shall consist of a bare rotor plus the following (where used): casing ring(s), interstage diaphragm(s) and bushing(s), diffuser(s), balancing ring or bushing, bearings and all other stationary or rotating parts required to be assembled over the shaft.

A rotating assembly shall include the following (where used):

packing or mechanical seal and gland(s);

deflector( s);

oil thrower(s);

oiltring(s);

bearing cover(s).

It shall not include coupling, pulley, or sheave, nor shall it include bearing housings except when these are of a design that requires they be assembled prior to mounting of the bearings.

1.1.6.6 Rotation of casing

The normal position of the discharge nozzle of an end suction horizontal pump shall be top vertical. Optional positions of the discharge nozzle shall be designated by degrees of rotation, measured from the vertical center line in the clockwise direction, facing the drive end of the pump (see Figure 1.28).

1.1.6.7 Rotation of pumps

Pumps are designated as having clockwise (CW) or counterclockwise (CCW) rotation when facing the drive end (see Figures 1.28, 1.29 and 1.30).

To determine the rotation of a horizontal pump,. stand at the driver end facing the pump (Figure 1.29). If the top of the shaft revolves from the left to the right, the rotation is clockwise (CW), and if the top of the shaft

26

revolves from right to left, the rotation is counterclock- . wise (CCW). t

I COUNTER·CLOCKWISE IMPELLER ROTATION

I--... CLOCKWISE

~I "¢ IMPELLER ROTATION

I ---.1\ ~ -&,") "~

CLOCKWISE IMPELLER ROTATION

Figure 1.28 - Pump shaft rotation

DRIVER END VIEW PUMP

SECT. AA

Clockwise pump

DRIVER

SUCT.

Figure 1.29 - Horizontal pump rotation

DISCHARGE

Figure 1.30 - Vertical pump rotation

t

1.1.6.8 Recommended minimum spares

It is not possible to recommend minimum spares to COver all conditions. However, the following may be taken as a guide:

Domestic service handling clean, non-corrosive liquids where interrupted service is not important:

shaft sleeves;

stuffing-box packing or mechanical seal;

gaskets;

coupling connectors (if any).

Domestic service handling abrasive or corrosive liquids or where some interruption in continuity of service is possible:

shaft sleeves;

bearings;

wearing rings or parts;

stuffing-box packing or mechanical seal;


gaskets


Export, marine or domestic service where minimum loss of service is essential:

complete rotating assembly (see Section 1.1.6.5);

gaskets;


1.1.7 Centrifugal pumps nomenclature

The nomenclature and definitions published here were prepared to provide a means for identifying the various pump components covered by the Hydraulic Institute Standards and also to serve as a common language, that will be understandable to the purchaser, the manufacturer and to those writing specifications for pumps and pumping equipment.

1.1.7.1 Definitions - part names

Table 1.1 is arranged in four columns as follows: part names in alphabetical order, item numbers used to identify part names on sectional drawings, abbreviations and definitions of pump part names.

Text continues on page 35.

Table 1.1 - Centrifugal pump nomenclature - alphabetical listing

Part name Item No. Abbreviation Definition

Adapter 71 Adpt A machined piece used to permit assembly of two other parts or for a spacer

Assembly, rotor 222 Assy rtr core The rotating assembly of an electrical machine core containing laminations and conductors, which,

when interacting with stator core assembly pro-duces torque

Assembly, stator 223 Assy sttr core The fixed assembly of an electrical machine core containing laminations and windings which create

magnetic fields

Base 53 Base A pedestal to support a pump

Base plate 23 Base pi A member on which the pump and its driver are mounted

(continued)

27

HI Ce_ntrifugal Pump Types and Nomenclature - 2000

Table 1.1 - Centrifugal pump npmenclature - alphabetical listing (continued)


Bearing, inboard 16 Brg inbd The bearing nearest the coupling of a double suction pump but farthest from the coupling of an end suction pump

Bearing, outboard 18 Brg outbd The bearing most distant from the coupling of a double suction pump but nearest to the coupling of an end suction pump

Bracket, bearing 125 Bkt brg Detachable bracket that contains a bearing

Bushing, bearing 39 Bush brg The removable portion of a sleeve bearing in contact with the journal

Bushing, interstage 113 Bush instg diaph A tubular shaped replaceable piece mounted in diaphragm the interstage diaphragm

Bushing, pressure 117 Bush press red A replaceable piece used to reduce the liquid reducing pressure at the stuffing box by throttling the flow

Bushing, stuffing-box 63 Bush stfg box A replaceable sleeve or ring placed in the end of the stuffing box opposite the gland

Bushing, throttle, 171 Bush throt aux A stationary ring or sleeve placed in the gland of a auxiliary mechanical seal subassembly to restrict leakage

in the event of seal failure

Cap, bearing, 41 Cap brg inbd The removable upper portion of the inboard inboard bearing housing

Cap, bearing, 43 Cap brg outbd The removable upper portion of the outboard outboard bearing housing

Casing 1 Csg The portion of the pump that includes the impell.er chamber and volute or diffuser

Casing, gland half 1C Csg gld half The gland half of a radially split lined casing

Casing, lower half 1A Csg Iwr half The lower or supporting half of the casing of an axially split pump

Casing, suction half 10 Csg suc half The suction half of a radially split lined casing

Casing, upper half 1B Csg upr half The upper or removable half of the casing of an axially split pump

--Collar, release 36 Clr rei Split ring device to ease movement of screwed-on

impellers

(continued)

28


Table 1.1 - Centrifugal pump nomenclature - alphabetical listing (continued)


Collar, shaft 68 Clr sft A ring used on a shaft to establish a shoulder for a ball bearing

Collar, thrust 72 Clr thr A circular collar mounted on a shaft to absorb the unbalanced axial thrust in the pump

Coupling half, driver 42 Cplg half drvr The coupling half mounted on driver shaft

Coupling half, pump 44 Cplg half pump The coupling half mounted on pump shaft

Coupling, oil pump 120 Cplg oil pump A means of connecting the driver shaft to the oil pump shaft

Coupling, shaft 70 Cplg sft A mechanism used to transmit power from the drive shaft to the pump shaft or to connect two pieces of shaft

Cover, bearing end 123 Cov brg end A plate closing the tachometer port in the end of the outboard bearing housing

Cover, bearing, 35 Cov brg inbd An enclosing plate for either end of an inboard inboard bearing of double suction or multistage pumps, or

for the impeller end of the bearing of end suction pumps

Cover, bearing, 37 Cov brg outbd An enclosing plate for either end of the outboard outboard bearing of double suction or multistage pumps, or

for the coupling end of the bearing of end suction pumps

Cover, motor end 207 Cov mot end A removable piece which enclosed the end(s) of a motor stator housing

Cover, oil bearing 45 Cov oil brg cap A lid or plate over an oil filler hole or inspection cap hole in a bearing cap

Cover, stuffing-box 11 Cov stfg box A removable piece, with stuffing-box integral, used to enclose the outboard side of the impeller in the casing of end suction pumps

Cover, suction 9 Cov suct A removable piece, with which the inlet nozzle may be integral, used to enclose the suction side of the casing of end suction pumps

Crossover, 111 Xover instg A specifically designed piece that carries the flow interstage from one stage to another in a multistage pump

(continued)

29

HI Centrifugal Pump Types and Nomenclature '- 2000



Deflector 40 Defl A flange or collar around a shaft and rotating with it to prevent passage of liquid, grease, oil or heat along the shaft

Diaphragm, 109 Diaph instg A removable stationary partition between stages interstage of a multistage pump

Diffuser 5 Diff A piece, adjacent to the impeller exit, which has multiple passages of increasing area for convert-ing velocity to pressure

Disc or drum, 56 Disc/drum bal The rotary member of a hydraulic balancing balancing device

Elbow, discharge 105 Ell disch An elbow in an axial flow mixed flow or turbine pump by which the liquid leaves the pump

Elbow, suction 57 Ell suct A curved water passage, usually 90 degrees, attached to the pump inlet

Frame 19 Fr A member of an end suction pump to which are assembled the liquid end and rotating element

Gasket 73 Gskt Resilient material used to seal jOint between parts to prevent leakage

Gasket, impeller 28 Gskt imp scr Resilient material used to seal jOint between hub screw of impeller and the impeller screw

Gasket, shaft sleeve 38 Gskt sft slv Resilient material used to provide a seal between the shaft sleeve and the impeller

Gauge, sight, oil 143 Ga sight oil A device for the visual determination of the oil level

Gland 17 Gld A retainer that compresses packing in a stuffing-box or retains the stationary element of a mechanical seal

Gland, stuffing-box, 133 Gld stfg box aux A follower provided for compression of packing in auxiliary an auxiliary stuffing-box

Guard, coupling 131 Grd cplg A protective shield over a shaft coupling

Handle 227 Hdl A piece which a person can use to hand carry a pump

Housing, bearing 99 Hsg brg A body in which the bearing is mounted

(contmued)

30




Housing, bearing, 31 Hsg brg inbd See bearing (inboard) and bearing housing inboard

Housing, bearing, 33 Hsg brg outbd See bearing (outboard) and bearing housing outboard

Housing, stator 201 Hsg stir A body in which a stator core assembly is mounted

Impeller 2 Imp The bladed member of a rotating assembly of the pump which imparts the principal force to the liquid pumped

Inducer 246 Ind A single stage axial flow helix installed in the suction eye of an impeller to lower the NPSHR

Journal, thrust 74 Jnl thr brg A removable cylindrical piece mounted on the bearing shaft and which turns in the bearing. It may have

an integral thrust collar

Key, bearing journal 76 Key brg jnl A parallel-sided piece used for preventing the

t bearing journal from rotating relative to the shaft

Key, coupling 46 Key cplg A parallel-sided piece used to prevent the shaft from turning in a coupling half

Key, impeller (propeller) 32 Key imp· A parallel-sided piece used to prevent the impeller from rotating relative to the shaft

Liner, casing 219 Lnr csg A replaceable metal, rubber, or phenolic insert to protect the casing from abrasive wear or damage

Liner, suction cover 21A Lnr, suct cov A part within the suction cover

Liner, stuffing-box 218 Lnr, stfg box cov A part within the stuffing-box cover cover

Liner, suction half 21C Lnr, suct half A part within the casing, suction half

Liner, gland half 210 Lnr, gld half A part within the casing, gland half

Liner, frame 21 Lnr fr A part within the frame carrying one or more of the bearings

Locknut, bearing 22 Lknut brg A fastener that positions an anti-friction bearing on the shaft

(continued)

31




Locknut, coupling 50 Lknut cplg A fastener holding a coupling half in position on a tapered shaft

Lockwasher 69 Lkwash A device to prevent loosening of a nut

Nut, impeller 24 Nut imp A threaded piece used to fasten the impeller on the shaft

Nut, shaft adjusting 66 Nut sft adj A threaded piece for altering the axial position of the rotating assembly

Nut, shaft sleeve 20 Nut sft slv A threaded piece used to locate the shaft sleeve on the shaft

Packing 13 Pkg A pliable lubricated material used to provide a seal around the portion of the shaft located in the stuffing-box

Pedestal, driver 81 Ped drvr A support for the driver of a vertical pump

Pipe, column 101 Pipe col A vertical pipe by which the pumping element is suspended

Plate, wear 225 Wppl A removable, axial clearance part used to protect the casing, stuffing-box or suction cover from wear

Plate, side 61 PI side A replaceable piece in the casing or cover of an open impeller pump to maintain a close clearance along the impeller face

Pump, oil 121 Pump oil A device for supplying lubrtcating oil under pressure

Race way 145 Ry A device which directs flow offluid from pump inlet to impeller and channels fluid to discharge outlet

Retainer, bearing 193 Ret brg A device used to support the line shaft bearing

Retainer, grease 51 Ret grs A contact seal or cover to retain grease

Ring, balancing 115 Ring bal The stationary member of a hydraulic balancing device

Ring, casing 7 Ring csg A stationary replaceable ring to protect the casing at the running fit with the impeller ring or the impeller

(continued) 4 32




Ring, impeller 8 Ring imp A replaceable ring mounted on one or both sides of the impeller

Ring, lantern 29 Ring Itrn An annular piece used to establish a liquid seal around the shaft and to lubricate the stuffing-box packing

Ring-O 119 RingO A radial-type seal

Ring, oil 60 Ring oil A rotating ring used to carry oil from the reservoir to the bearing

Ring, stuffing-box cover 27 Ring stfg box cov A stationary ring to protect the stuffing-box cover at the running fit with the impeller ring or impeller

Ring, suction cover 25 Ring suct cov A stationary ring to protect the suction cover at the running fit with the impeller ring or impeller

Ring, thrust, split 86 Ring thr split A split ring mounted on a shaft to absorb the unbalanced axial thrust in the pump , Screw, impeller 26 Scrimp A special screw to fasten the impeller to the shaft

Screw, impeller, 149 Scr imp adj A special screw to adjust the axial movement of adjusting shaft/impeller to control clearance between the

rotating impeller and the race way

Seal 89 Seal A device to prevent the flow of a liquid or gas into or out of a cavity

Seal, bearing cover, 47 Seal brg cov inbd A contact seal for the bearing cover (inboard) inboard

Seal, bearing cover, 49 Seal brg cov A contact seal for the bearing cover (outboard) outboard outbd

Seal, bearing housing 169 Seal brg hsg A contact seal for a bearing housing

Seal, mechanical, 80 Seal mech rotg A device flexibly mounted on a shaft in or on the rotating element elem stuffing-bOX and having a smooth, flat seal face

held against the stationary sealing face

Seal, mechanical, 65 Seal mech sta A subassembly consisting of one or more parts stationary element elem mounted in or on a stuffing-box and having a

smooth flat sealing face

(continued)

33




Shaft,head 10 Sft hd The upper cylindrical member in a vertical pump which transmits power from the driver to the drive shaft

Shaft 6 Sft The cylindrical member on which the impeller is mounted and through which power is transmitted to the impeller

Shell, lower half, 139 Shl Iwr half brg A piece supporting the bearing bushing located in bearing outboard outbd the lower half of the outboard housing

Shell, lower half, 135 Shllwr half A semi-cylindrical piece supporting the bearing bearing inboard brg inbd bushing located in the lower half of the inboard

bearing housing

Shell, upper half, 141 Shl upr half brg A piece supporting the bearing bushing located in bearing outboard outbd the upper half of the outboard bearing housing

Shell, upper half, 137 Shl upr half brg A piece supporting the bearing bushing located in bearing inboard inbd the upper half of the inboard bearing housing

Shield,'0i1 ,r~irtg 107 Shld oil retg A device to prevent oil from leaking from the bearing housing f

Shim 67 Shim A piece of material that is placed between two members to adjust their position

Sleeve, impeller hub 34 Siv imp hub A replaceable, cylindrical wearing part mounted on the extended pump impeller hub

Sleeve, interstage 58 Siv instg A cylindrical piece mounted on the pump shaft between impellers

Sleeve, shaft 14 Siv sft A cylindrical piece fitted over the shaft to protect the shaft through the stuffing-box and which may also serve to locate the impeller on the shaft

Spacer, bearing 78 Spcr brg A cylindrical piece that fits over the shaft to space or locate rolling element bearings

Spacer, coupling 88 Spcr cplg A cylindrical piece used to provide axial space for the removal of the rotating assembly without removing the driver

Strainer 209 Str A device used to prevent large objects from entering the pump

(continued) 4

34



Part name Item No. Abbreviation

Stuffing-box 83 Stfg box

Stuffing-box, 75 Stfg box aux auxiliary

Thrower (oil or 62 Thwr (oil or grs) grease)

Table 1.2 is arranged by item number and part name.

All parts having even item numbers constitute a part of the rotating element. '

The cross-sectional drawings (see Figures 1.6 through 1.27) illustrate the largest possible number of parts in their proper relationship and a few typical construction modifications but do not represent recommended D design.

Numbers shown are for convenient cross-reference between tabulated names of parts and cross-sectional drawing. These numbers do not necessarily represent standard part numbers in use by any manufacturer.

Definition

A portion of the casing through which packing and a gland or a mechanical seal is placed to prevent leakage

A recessed portion of the gland and cover of a mechanical seal subassembly designed to accommodate one or more rings of packing

A disc rotating with the pump shaft to carry the lubricant from the reservoir to the bearing

Table 1.2 - Centrifugal pump nomenclature -numerical listing

Item no. Part name

1 Casing

1A Casing, lower half

18 Casing, upper half

1C Casing, gland half

10 Casing, suction half

2 Impeller (propeller)

5 Diffuser

6 Shaft

7 Ring, casing

8 Ring, impeller

9 Cover, suction

10 Shaft, head

11 Cover, stuffing-box or seal chamber

13 Packing

(continued)

35


Table 1.2 - Centrifugal pump nomenclature -numerical listing (continued)

Item no. Part name

14 Sleeve, shaft

16 Bearing, inboard

17 Gland

18 Bearing, outboard

19 Frame

20 Nut, shaft sleeve

21 Liner, frame

21A Liner, suction cover

21B Liner, stuffing-box cover

21C Liner, suction half

21D Liner, gland half

22 Locknut, bearing

23 Base plate

24 Nut, impeller

25 Ring, suction cover

26 Screw, impeller

27 Ring, stuffing-box cover

28 Gasket, impeller screw

29 Ring, lantern

31 Housing, bearing, inboard

32 Key, impeller

33 Housing, bearing, outboard

34 Sleeve, impeller hub

36


Item no. Part name

35 Cover, bearing, inboard

36 Collar, release

37 Cover, bearing, outboard

38 Gasket, shaft sleeve

39 Bushing, bearing

40 Deflector

41 Cap, bearing, inboard

42 Coupling half, driver

43 Cap, bearing outboard

44 Coupling half, pump

45 Cover, oil bearing cap

46 Key, coupling

47 Seal, bearing cover, inboard

49 Seal, bearing cover, outboard

50 Locknut, coupling

51 Retainer, grease

53 Base

56 Balancing drum and/or disc

57 Elbow, suction

58 Sleeve, interstage

60 Ring, oil

61 Plate, side

62 Thrower (oil or grease)

(contmued)

'I

Table 1.2 - Centrifugal pump nomenclatur~ -numerical listing (continued)

Item no. Part name

63 Bushing, stuffing-box

65 Seal, mechanical, stationary element

66 Nut, shaft adjusting

67 Shim

68 Collar, shaft

69 Lockwasher

70 Coupling, shaft

71 Adapter

72 Collar, thrust

73 Gasket

74 Journal, thrust bearing

75 Stuffing box, auxiliary

76 Key, bearing journal

78 Spacer, bearing

80 Seal, mechanical, rotating element

81 Pedestal, driver

83 Stuffing box

86 Ring, thrust split

88 Spacer, coupling

89 Seal

99 Housing, bearing

101 Pipe, column



Item no. Part name

105 Elbow, discharge

107 Shield, oil retaining

109 Diaphragm, interstage

111 Crossover, interstage

113 Bushing, interstage diaphragm

115 Ring, balancing

117 Bushing, pressure reducing

119 Ring-O

120 Coupling, oil pump

121 Pump, oil

123 Cover, bearing end

125 Bracket, bearing

131 Guard, coupling

133 Gland, stuffing-box auxiliary

135 Shell, lower half, bearing inboard

137 Shell, upper half, bearing inboard

139 Shell, lower half, bearing outboard

141 Shell, upper half, bearing outboard

143 Gauge, sight, oil

145 Raceway

149 Screw, impeller, adjusting

169 Seal bearing housing

(continued)

37


Table 1.2-- Centrifugal pump nomenclature -numerical listing (continued)

Item no. Part name

171 Bushing, throttle, auxiliary

193 Retainer, bearing

201 Housing, stator

207 Cover, motor end

209 Strainer

219 Liner, casing

222 Assembly, rotor core

223 Assembly, stator core

225 Plate, wear

227 Handle

246 Inducer

38

t

1.1.7.2 Letter (dimensional) designations .""'-., The letter designations used on the following drawings

were prepared to provide a common means for identifying various pump dimensions and also to serve as a common language which will be mutually understandable to the purchaser, manufacturer and to anyone writing specifications for pumps and pumping equipment.

CP

l~, ---1--"--

• NOTE: Casing foot is very common. See Figure 1.15

A Width of base support

B Length of base support

CP Length of pump

0 Vertical height - bottom of base support to centerline of pump

DO Distance - pump centerline to bottom drain plug

E Distance from centerline pump to centerline hold-down bolts

F Distance from centerline to centerline of hold-down bolts

G Thickness of pads on support, or height of base plate, depending on location of bolt holes

H Diameter of hold-down bolt holes

J Width of pads for hold-down bolts

K Length of support pads for hold-down bolts


DlSCH.ARGE

t~J-LJ SUCTION E E 0 ES CENTERLINE A ----.:-l H· IA. HOL

L Horizontal distance from suction nozzle face to centerline nearest hold-down bolt holes

N Distance - end of bearing housing to end of shaft

0 Vertical distance - bottom of support to discharge nozzle face

P Length from edge of support, or base plate, to centerline of bolt holes

S Distance from centerline of pump to centerline of suction nozzle

U Diameter of straight shaft - coupling end

V Length of shaft available for coupling or pulley

X Distance from discharge face to centerline of pump

y Horizontal distance - centerline discharge nozzle to suction nozzle face

Z Centerline discharge nozzle to centerline of pump

Figure 1.31 - Overhung impeller - separately coupled - single stage - frame mounted

39


1--------- HC

I HM

CENTERLINE SUCTION

Z-+--I

HH·DIA. HOLES

~~~~ 1 ...

1

.-------- :: --------~___t- Hl

C Length of driver

CP Length of pump

HA Width of base support

HB Length of base support

HC Overall length of combined pump and driver when on base

HD Vertical height - bottom of base support to centerline of pump

HE Distance from centerline pump to centerline hold-down bolts

HF Distance from centerline to centerline of holddown bolt holes

HG Thickness of pads on support, or heights of base plate, depending on location of bolt holes

HH Diameter of hold-down bolt holes

HL Horizontal distance from suction nozzle face to centerline nearest hold-down bolt holes

HM Height of unit - bottom of base to top of driver

HO Vertical distance - bottom of support to discharge nozzle face

HP Length from edge of support, or base plate, to centerline of bolt holes

HT Horizontal distance - between pump and driving.shaft



Y Horizontal distance - centerline discharge nozzle to suction nozzle face


Figure 1.32 - Overhung impeller - separately coupled - single stage - frame mounted - pump on base plate

40

)

KEYWAY

CP -.---_

LENGTH OF SHAFT AVAILABLE FOR COUPLING OR PULLEY



CP Length of pump

0 Vertical height - bottom of base support to centerline of pump

DO Distance - pump centerline to bottom drain plug


F Distance from centerline to centerline of hold-down bolts






N

0

P

S

U

V

X

y

Z

SUCTION CENTERLINE

DISCHARGE

Distance - end of bearing housing to end of shaft

Vertical distance - bottom of support to dis-charge nozzle face or to top of case on horizon-tally split pumps

Length from edge of support, or base plate, to centerline of bolt holes

Distance from centerline of pump to centerline of suction nozzle

Diameter of straight shaft - coupling end

Length of shaft available for coupling or pulley

Distance from discharge face to centerline of pump

Horizontal distance - centerline discharge nozzle to suction nozzle face

Centerline discharge nozzle to centerline of pump

Figure 1.33 - Overhung impeller - separately coupled single stage - centerline mounted

41


C

CP

HA

HB

HC

HD

HE

HF

HG

HH

HJ

HK

42

SUCTION HC \" DISCHARGE

~ SUCTION

Length of driver HL Horizontal distance from suction nozzle face to Length of pump centerline nearest hold-down bolt holes

Width of base support HM Height of unit - bottom of base to top of driver

Length of base support HO Vertical distance - bottom of support to

Overall length of combined pump and driver discharge nozzle face

when on base HP Length from edge of support, or base plate, to

Vertical height - bottom of base support to centerline of bolt holes

centerline of pump HT Horizontal distance - between pump and

Distance from centerline of pump to centerline driving shaft

of hold-down bolts S Distance from centerline of pump to centerline

Distance from centerline to centerline of hold- of suction nozzle

down bolt holes X Distance from discharge face to cent~rline of

Thickness of pads on support, or heights of pump

base plate, depending on location of bolt holes y Horizontal distance - centerline discharge

Diameter of hold-down bolt holes nozzle to suction nozzle face

Width of pads for hold-down bolt holes Z Centerline discharge nozzle to centerline of

Length of support pad for hold-down bolts pump

Figure 1.34 - Overhung impeller - separately coupled single stage - centerline mounted - pump on base plate

4

) A

B

D

KEYWAY

LENGTH OF SHAFT AVAILABLE FOR COUPLING OR PULLEY

Width of base support

Length of base support

W~M

Vertical height - bottom of base support to centerline of pump


f

N

0

DISCHARGE

SUCTION

o

'---- A

THICKNESS

H·DIA. HOLES


Vertical distance - bottom of support to discharge nozzle face

DD Distance - pump centerline to bottom drain P Length from edge of support, or base plate, to

E

F

G

H

J

M

plug centerline of bolt holes

Distance from centerline pump to centerline R Horizontal distance - centerline discharge

hold-down bolts flange to centerline hold-down bolt hole

Distance between centerlines of hold-down S Distance from centerline of pump to centerline

bolts of suction nozzle

Thickness of pads on support, or height of base U Diameter of straight shaft - coupling end

plate, depending on location of bolt holes V Length of shaft available for coupling or pulley

Diameter of hold-down bolt holes W Distance from centerline of discharge flange to

Width of pads for hold-down bolts end of pump shaft

Horizontal distance from centerline of X Distance from discharge face to centerline of

discharge flange to centerline of suction flange pump


Figure 1.35 - Overhung impeller - separately coupled single stage - centerline mounted (top suction)

43


HW DISCHARGE

HM HO

HR

HH·DIA. HOLES

~----~~--------- HB

HA Width of base support HP Length from edge of support, or base plate, to HB . Length of base support centerline of bolt holes

HD Vertical height - bottom of base support to HR Horizontal distance - centerline discharge centerline of pump flange to centerline hold-down bolt hole

HE Distance from centerline pump to centerline HT Horizontal distance - between pump and hold-down bolts driving shaft

HF Distance from centerline to centerline of hold- HW Distance from centerline of discharge flange to down bolt holes end of motor

HG Thickness of pads on support, or heights of M Horizontal distance from centerline of base plate, depending on location of bolt holes discharge flange to centerline of suction flange

HH Diameter of hold-down bolt holes S Distance from centerline of pump to centerline

HJ Width of pads for hold-down bolt holes of suction nozzle

HK Length of support pad for hold-down bolts W Distance from centerline of discharge flange to

HM Height of unit - bottom of base to top of driver end of pump shaft

HO Vertical distance - bottom of support to dis-X Distance from discharge face to centerline of

charge nozzle face or top of case on horizon-pump

tally split pumps Z Centerline discharge nozzle to centerline of pump

Figure 1.36 - Overhung impeller - separately coupled single stage - centerline mounted pump on base plate (top suction)

44

t

j


1--------- HB ---------l

HF, --_'1---- HF, -----+--1- HP, HL

HA, +--II----H-- HA,

C

CP

HA

HB

HC

HD

HE

HF

HG

HH

HL

HM

He

Length of driver HO Vertical distance - bottom of support to top of Length of pump case

Width of base support HP Length from edge of support, or base plate, to

Length of base support centerline of bolt holes

Overall length of combined pump and driver HR Horizontal distance - centerline discharge

when on base flange to centerline hold-down bolt hole

Vertical height - bottom of base support to HT Horizontal distance - between pump and

centerline of pump driving shaft

Distance from centerline pump to centerline S Distance from centerline of pump to centerline

hold-down bolts of suction nozzle

Distance from centerline to centerline of hold- W Distance from centerline of discharge flange to

down bolt holes end of pump shaft

Thickness' of pads on support, or heights of X Distance from discharge face to centerline of

base plate, depending on location of bolt holes pump

Diameter of hold-down bolt holes yy Horizontal distance - centerline case to

Horizontal distance from suction nozzle face to suction nozzle face on horizontally split pumps

centerline nearest hold-down bolt holes Z Centerline discharge nozzle to centerline of

Height of unit - bottom of base to top of driver pump

Figure 1.37 -Impeller between bearings - separately coupledsingle stage axial (horizontal) split case pump on base plate

45


BI RI

P, PI

x --+--- yy

o

DISCHARGE

H·DIA. HOLES ~



CP Length of pump

D Vertical height - bottom of base support to centerline of pump





K Length of support pads for hold-down bolts


M Horizontal distance from centerline of discharge flange to centerline of suction flange

N Distance - end of bearing housing to end of shaft

o Vertical distance - bottom of support to top of case


R Horizontal distance - centerline discharge flange to centerline hold-down bolt hole


U Diameter of straight shaft - coupling end

V Length of shaft available for coupling or pulley

W Distance from centerline of discharge flange to end of pump shaft


YY Horizontal distance - centerline case to suction nozzle face

Z Centerline discharge noZzle to centerline of pump

Figure 1.38 -Impeller between bearings - separately coupled -single stage axial (horizontal) split case

46

NOTE:

HI Centrifugal Pump Types and Nomenclature -- 2000

~-----------------.Cp I

Mp----i

Y -f7r! SU/~TION "t'--+-if---,-.......J l /

-' / ,! X

----!-~LP

Circled letters are NEMA designations

Figure 1.39 - Overhung impeller - close coupled - single stage - end suction

x

Figure 1.40 - Overhung impellerseparately coupled - single stage -frame mounted (vertically mounted)

,. I i

DO I i 0,

~

A

B

CP D

DD

E

G

H

J

K

L

LP

MP

N

Width of base support

Length of base support

Length of pump

DISCHARGE

Vertical height - bottom of base support to centerline of pump

Distance - pump centerline to bottom drain plug

Distance from centerline pump to centerline holddown bolts

Thickness of pads on support, or height of base plate, depending on location of bolt holes

Diameter of hold-down bolt holes

Width of pads for hold-down bolts

Length of support pads for hold-down bolts

Horizontal distance from suction nozzle face to centerline nearest hold-down bolt holes

Length of adapter piece

Distance from face of suction flange to mounting flange of adapter


OP Vertical distance - bottom of support to discharge nozzle face or to top of case on horizontally split pumps


u V

VD

VF

VS

VY

Diameter of straight shaft - coupling end

Length of shaft available for coupling or pulley

Vertical height - bottom of base support to centerline of discharge nozzle of vertical pumps

Distance from centerline of vertical pump to centerline of hold-down bolt holes

Vertical distance - centerline of discharge nozzle to centerline of suction nozzle on vertical pumps

Horizontal distance - centerline of pump to face of suction elbow of vertical pumps


XR Distance from centerline of motor hold-down bolt to centerline of conduit box

Y Horizontal distance - centerline discharge nozzle to suction nozzle face


47


SA

SB

SC

SD1

SE1

SF

SG

SH

SL

SM

z o i= u :::> 0:: Iif) CD o

ST (Size) TAP-SN (Number of) HOLES ON SC-DIA. BOLT CIRCLE.

J,

r SX

r SE

Iif) 0:: u::

~----!~

...... -------- SO

Depth of pilot register on face of stuffing-box

Inside diameter of stuffing-box

Diameter of bolt circle for gland studs or bolts

Diameter of shaft under shaft sleeve

Distance from face of stuffing-box to end of shaft sleeve

Distance from face of stuffing-box to centerline of tapped hole for lubrication or coolant fitting outside of stuffing box

Distance from face of stuffing-box to centerline of tapped hole for lubrication or coolant fitting inside of stuffing-box

Thickness of lantern ring

Effective length of stuffing-box

Thickness of stuffing-box bushing

NOTE: 1. Applicable only when sleeve is used

'---- SF --~

sw Sq-SR (Number of) RINGS

"__---- SG ----t~

SN Number of tapped holes for gland studs or bolts

SO Distance from face of stuffing-box to first obstruction

SP Outside diameter of pilot register on face of stuffing-box

SR Number of packing rings

SS Outside diameter of shaft sleeve or diameter of shaft if no sleeve is used

ST Size tap and type thread for gland studs or bolts

SU Outside diameter of insertable portion of gland

SW Size of packing

SX Inside diameter of gland

SY Length of insertable portion of gland

SZ Overall length of gland

Figure 1.41 - Stuffing-box area

48

1.1.7.3 Standard dimension for HI- NEMA Type C j face-mounted motors

The following dimensions were developed jointly by NEMA and the Hydraulic Institute and are the same as those given in NEMA Standard MG1. See Figure 1.42 and Tables 1.3 and 1.4.

Open drip-proof frame selections

3600 1800 1200 H.P. R.P.M. R.P.M. R.P.M.

1 - 143JM 145JM

1 1/2 143JM 145JM 182JM

2 145JM 145JM 184JM

3 145JM 182JM 213JM

5 182JM 184JM 215JM

71/2 184JM 213JM 254JM

10 213JM 215JM 256JM

15 215JM 254JM 284JM

20 254JM 256JM 286JM

25 256JM 284JM 324JM

30 284JM 286JM 326JM

40 286JM 324JM -

50 325JM 326JM -

60 326JM - -


49


EMorU O.043RJO.054R (Max Tol.)

DUC Dia. EM or U • 0.050 Dia.

Controlled Undercut Design (Detail A) Controlled Corner Radius Design (Detail 8)

143-184 JP and JM

143-184JP and JM ~--------AH----------~ ~-------AHI--------~~ ~------ER:--------~

213-365 JP 213-326JM

.03 x 45° Chamfer

Detail A or B Optional

Corner Detail "----Motor Manufacturer's Choice

FRAMES 213-365 JP FRAMES 143·18-4 2t3-326JM SF HOLE,

/LASS2 R.H.

JPANOJM BF HOLE. CLASS 2 R.H.

AK

1 4 AJ r L

Dimensions shown on Tables 1.3 and 1.4

NOTES:

1. AH, EQ and ET dimensions measured with the shaft pulled by hand away from the motor to the limit of end play.

2. AJ dimension - centerline of bolt holes is within 0.015 inch of true location for frames 143 to 256 JM and JP, inclusive, and within 0.025 inch of true location for frames 284 to 365 JM and JP, inclusive. True location is defined as angular and diametrical location with reference to the centerline of the AK dimension.

3. Shaft end play should not exceed the bearing internal axial movement. Bearing mounting fits should be as recommended for pump application by the bearing manufacturer. (This note applies to open and totally enclosed motors. For explosion-proof motors, the individual motor manufacturer should be contacted.)

Figure 1.42 -- Dimensions for types JM and JP alternating current face-mounting close-coupled pump motors having rolling contact bearings

50

• -.... .....

Table 1.3 - Dimensions for Type JM alternating-current face-mounting close-coupled pump motors (US units)

BF

Frame Bolt Penetration Designations U AH AJ AK BB BD Max Number Tap Size Allowance

143JM and 145JM 0.8745 4.281 5.875 _ 4.500 0.156 6.62 4 °/8-16 0.56

0.8740 4.219 4.497 0.125

182JM and 184JM 0.8745 4.281 5.875 4.500 0.156 6.62 4 3/8-16 0.56

0.8740 4.219 4.497 0.125

213JM and 215JM 0.8745 4.281 7.250 8.500 0.312 9.00 4 3/8-16 0.75

0.8740 4.219 8.497 0.250

254JM and 256JM 1.2495 5.281 7.250 8.500 0.312 10.0 4 1/2-13 0.75 1.2490 5.219 8.497 0.250

284JM and 286JM 1.2495 5.281 11.000 12.500 0.312 14.00 4 1/2-13 0.94

1.2490 5.219 12.495 0.250 324JM and 326JM 1.2495 5.281 11.000 12.500 0.312 14.00 4 -'/2"13 0.94

1.2490 5.219 12.495 0.250

EN Keyseat

Frame Tap Penetration Allowance EP ER ES Designations EL EM Size Tap Drill Bolt Min EQ Min R Min S ET

143JM and 145JM 1.156 1.0000 .j/8-16 1.12 0.75 1.156 0.640 4.250 0.771-0.756 1.65 0.190 2.890

1.154 0.9995 0.610 0.188 2.860

182JM and 184JM 1.250 1.0000 3/8-16 1.12 0.75 1.250 0.640 4.250 0.771-0.756 1.65 0.190 2.890

1.248 0.9995 0.610 0.188 2.860

213JM and 215JM 1.250 1.000 3/8-16 1.12 0.75 1.750 0.640 4.250 1.112-1.097 1.65 0.190 2.890

1.248 0.9995 0.610 _ 0.188 2.860

254JM and 256JM 1.750 1.3750 1/2"13 1.50 1.00 1.750 0.640 5.250 1.112-1.097 2.53 0.252 3.015

1.748 1.3745 0.610 0.250 2.885 J 284JM and 286JM 1.750 1.3750 1/2"13 1.50 1.00 2.125 0.640 5.250 1.112-1.097 2.53 0.252 3.015

1.748 1.3745 0.610 0.250 2.885

324JM and 326JM 1.750 1.3750 1/2-13 1.50 1.00 _ 2.125 0.640 5.250 1.112-1.097 2.53 0.252 3.015

1.748 1.3745 0.610 0.250 2.885 01 ->.

I

I

o CD ~ .., ~ co 9!.. "U c: 3 '0

~ '0 CD CJ)

m ::J a. Z o 3 CD ::J ()

iii' Cal I

I\.) o o o

(J1 N

Table 1.4 - Dimensions for Type JP alternating-current face-mounting close-coupled pump motors (US units)

BF Frame Bolt Penetration

Designations U AH AJ AK BB BD Max Number Tap Size Allowance

143JP and 145JP 0.8745 7.343 5.875 4.500 0.156 6.62 4 J/a-16 0.56

0.8740 7.281 4.497 0.125

182JP and 184JP 0.8745 7.343 5.875 4.500 0.156 6.62 4 J/a-16 0.56

0.8740 7.281 4.497 0.125 213JP and 215JP 1.2495 8.156 7.250 8.500 0.312 9.00 4 1/2-16 0.75

1.2490 8.094 8.497 0.250 254JP and 256JP 1.2495 8.156 7.250 8.500 0.312 10.0 4 1/2-13 0.75

1.2490 8.094 8.497 0.250

284JP and 286JP 1.2495 8.156 11.000 12.500 0.312 14.00 4 0/a-11 0.94

1.2490 8.094 12.495 0.250

324JP and 326JP 1.2495 8.156 11.000 12.500 0.312 14.00 4 %-11 0.94

1.2490 8.094 12.495 0.250 .

364JP and 365JP 1.6245 8.156 11.000 12.500 0.312 14.00 4 %-11 0.94

1.6240 8.094 12.495 0.250

EN Keyseat

Frame Tap Penetration Allowance EP ER ES Designations EL EM Size Tap Drill Bolt Min EQ Min R Min S ET

143JP and 145JP 1.156 1.0000 J/a-16 1.12 0.75 1.156 1.578 7.312 0.771-0.756 1.65 0.190 5.952

1.154 0.9995 1.548 0.188 5.922

182JP and 184JP 1.250 1.0000 J/a-16 1.12 0.75 1.250 1.578 7.312 0.771-0.756 1.65 0.190 5.952

1.248 0.9995 1.548 0.188 5.922

213JP and 215JP 1.750 1.3750 1/2-13 1.50 1.00 1.750 2.390 8.125 1.112-1.097 2.53 0.252 5.890

1.748 1.3745 2.360 0.250 5.860

254JP and 256JP 1.750 1.3750 1/2-13 1.50 1.00 1.750 2.390 8.125 1.112-1.097 2.53 0.252 5.890

1.748 1.3745 2.360 0.250 5.860

284JP and 286JP 1.750 1.3750 1/2-13 1.50 1.00 2.125 2.390 8.125 1.112-1.097 2.53 0.252 5.895

1.748 1.3745 2.360 0.250 5.855 324JP and 326JP 1.750 1.3750 1/2-13 1.50 1.00 2.125 2.395 8.125 1.112-1.097 2.53 0.252 5.895

1.748 1.3745 2.355 0.250 5.855 364JP and 365JP 2.125 1.7500 1/2-13 1.50 1.00 2.500 2.395 8.125 1 .416-1 .401 2.53 0.377 5.895 .. 2.123 1.7495

~ ,.. 2.355 0.375 5ii~,>-

I

() (1) ::J .-+ ., ~ co QL

"U c 3 u -l '< U (1) (f)

OJ ::J Q.

Z o 3 (1) ::J o ru .-+ C

Cil I

N o o o

,


~---------BD-~~

4-BF HOLES 90° APART

NOTE: Dimensions shown on Table 1.5

Figure 1.43 - Standard dimensions for HI - NEMA type HP and HPH vertical solid-shaft motors

H.P. ;j/4

1 1 1/2

2 3 5

7 1/2 10 15 20 25 30 40 50 60 75 100 125 150 200 250

Open drip-proof frame selections

3600 R.P.M. 1800 R.P.M. 1200 R.P.M.

- - 143 HP - 143 HP 145 HP

143 HP 145 HP 182 HP 145 HP 145 HP 184 HP 145 HP 183 HP 213 HP 182 HP 184 HP 215 HP 184 HP 213 HP 254 HP 213 HP 215 HP 256 HP 215 HP 254 HP 284 HP 254 HP 256 HP 286 HP

256 HP 284 HP 324 HP 284HP 286 HP 326 HP 286 HP 324 HP 364 HP 324 HP 326 HP 365 HP 326 HP 364HP 404 HP

364 HP 365HP 405 HP 365 HP 404HP 444HP 404 HP 405 HP 445 HP 405 HP 444HP -444 HP 445 HP -445 HP - -

NOTES:

1 Dimensions measured with motor in vertical position shaft down.

2 AJ centerline of bolt holes within 0.025 inch for all frames of true locations. True location is defined as angular and diametrical location with reference to centerline of AK.

Shaft end play shall not exceed the bearing internal axial movement. The bearing mounting fits shall be as recommended by the bearing manufacturer for pump application.

The above applies to open and totally enclosed motors: for explosion-proof motors, contact individual manufacturer.

53

(Jl

"""

Table 1.5 - Standard dimensions for HI - NEMA Type HP and HPH vertical solid-shaft motors (US units)

BF Clearance

Hole Keyseat

Frame SS SO V EP ES Designations AJ AK Min Max No. Size U Min AH Min EU R Min S

143HP and 145HP 9.125 8.253 0.19 10.00 4 0.44 0.8750 2.75 2.781 1.156 0.688 0.771-0.756 1.28 0.190-0.188 8.250 0.8745 2.719 0.683

182HP and 184HP 9.125 8.253 0.19 10.00 4 0.44 1.1250 2.75 2.781 1.156 0.875 0.986-0.971 1.28 0.252-0.250

8.250 1.1245 2.719 0.870 213HP and 215 HP 9.125 8.253 0.19 10.00 4 0.44 1.1250 2.75 2.781 1.375 0.875 0.986-0.971 1.28 0.252-0.250

8.250 1.1245 2.719 0.870 254HP and 256HP 9.125 8.253 0.19 10.00 4 0.44 1.1250 2.75 2.781 1.750 0.875 0.986-0.971 1.28 0.252-0.250

8.250 1.1245 2.719 0.870 284HP and 286Hp a 9.125 8.253 0.19 10.00 4 0.44 1.1250 2.75 2.781 1.750 0.875 0.986-0.971 1.28 0.252-0.250

8.250 1.1245 2.719 0.870 324HP and 326HP 14.750 13.505 0.25 16.50 4 0.69 1.6250 4.50 4.531 2.125 1.250 1.416-1.401 3.03 0.377-0.375

13.500 1.6245 4.469 1.245 364HP and 365HP 14.750 13.505 0.25 16.50 4 0.69 1.6250 4.50 4.531 2.250 1.250 1.416-1.401 3.03 0.377-0.375

13.500 1.6245 4.469 1.245

404HP and 405Hpa 14.750 13.505 0.25 16.50 4 0.69 1.6250 4.50 4.562 2.250 1.250 1.416-1.401 3.03 0.377-0.375

13.500 1.6245 4.438 1.245

444HP and 445HP 14.750 13.505 0.25 16.50 4 0.69 2.1250 4.50 4.562 2.250 1.750 1.845-1.830 3.03 0.502-0.500' 13.500 2.1240 4.438 1.745

I

a These frames have the following alternate dimensions:

284HPH and 286HPH 14.750 13.505 0.25 16.50 4 0.69 1.6250 4.50 4.531 1.750 1.250 1.416-1.401 3.03 0.377-0.375 13.500 1.6245 4.469 1.245

404HPH and 405HPH 14.750 13.505 0.25 16.50 4 0.69 2.1250 4.50 4.562 2.250 1.750 1.845-1.830 3.03 0.502-0.500 13.500 2.1240 4.438 1.745 - -- --- -

NOTES:

1 This standard was developed jointly by the Hydraulic Institute and NEMA. 2 All dimensions in inches. The above are integral-horsepower A-C squirrel-cage induction motors for process, in-line and other applications. .... .. 4IA-

I

o CD ::J .-. ::!. ..." C

co ~ lJ c 3 "0

~ "0 CD (f)

ru ::J a. Z o 3 CD ::J o OJ .-. c CD

I t\) o o o

1.2 Definitions

_ The purpose of this section is to define terms used in pump applications. Symbols, terms and units are shown in Table 1.6 and subscripts in Table 1.7.

1.2.1 Rate of flow (capacity)

The rate of flow of a pump is the total volume throughput per unit of time at suction conditions. It assumes no entrained gases at the stated operating conditions. The term "capacity" is also used.

1.2.2 Speed

The number of revolutions of the shaft in a given unit of time. Speed is expressed as revolutions per minute.

1.2.3 Head

Head is the expression of the energy content of the liquid referred to any arbitrary datum. It is expressed in units of energy per unit weight of liquid. The measuring unit for head is meters (feet) of liquid.

1.2.3.1 Gauge head (hg)

1 The energy of the liquid due to its pressure as determined by a pressure gauge or other pressure measuring device.

L--PI!M' CENlERllNE

ANDDATIJMELEVAllON

HI Centrifugal Pump Definitions - 2000

1.2.3.2 Velocity head (hv)

The kinetic energy of the liquid at a given cross section. Velocity head is expressed by the following equation:

v2 h =-

v 2g

Where v is obtained by dividing the flow by the cross section area at the point of gauge connection:

(Metric) v = 278 x Q A

(US units) v = 0.32~5 x Q

1.2.3.3 Elevation head (Z)

The potential energy of the liquid due to its elevation relative to a datum level measured to the center of the pressure gauge or liquid surface.

1.2.3.4 Datum

The pump's datum is a horizontal plane that serves as the reference for head measurements taken during test. Vertical pumps are usually tested in an open pit with the suction flooded. The datum is then the eye of the first stage impeller (see Figure 1.44).

Optional tests can be performed with the pump mounted in a ,suction can. IrrespeCtive of pump mounting, the pump's datum is maintained at the eye of the first stage impeller.

PI!M' CENIERLINE

. Horizontal unit - Single or double suction (double suction not

shown)

Vertical single suction pump

Vertical double suction pump

Figure 1.44 - Datum elevations for various pump designs

55

U1 0>

Table 1.6 - Symbols

Symbol Term Metric unit Abbreviation A Area square millimeter mm

~ (beta) Meter or orifice ratio dimensionless D Diameter millimeter mm

Ll (delta) Difference dimensionless 11 (eta) Efficiency percent %

g Gravitational acceleration meter/second squared m/s2 'Y (gamma) Specific weight

h Head meter m H Total head meter m K Radial thrust factor dimensionless I Static lift meter m n Speed revolutions/minute rpm

NPSHA Net positive suction head available meter m NPSHR Net positive suction head required meter m

NS Specific speed NS = nQ1/2/H3/4 notusedb

v (nu) Kinematic viscosity millimeter squared/sec mm2/s 1t pi = 3.1416 dimensionless p Pressure kilopascal kPa P Power kilowatt kW q Rate of flow (Capacity) cubic meter/hour m3/h Q Rate of flow (Capacity) cubic meter/hour m3/h

RM Linear model ratio dimensionless RT Radial thrust Newton N

P (rho) Density kilogram/cubic meter kg/m3

S Suction specific speed notusedb

= nQ1/2/NPSHR3/4

s Specific gravity dimensionless t Temperature degrees Celsius °C

1: (tau) Torque Newton-meter N·m U Residual unbalance gram-centimeter g-cm v Velocity meter/second m/s

cj> (phi) Velocity in vibration millimeters/second mm/s x Exponent none none Z Elevation gauge distance above meter m

or below datum

8 Conversion factor x English units = metric units.

b Di .• :ions are not used. Values will depend on units used in formula. ....

US Customary Unit square inches dimensionless

inches dimensionless

percent feet/second squared

pounds/cubic foot feet feet

dimensionless feet

revolutions/minute feet feet

not usedb

feet squared/second dimensionless

pounds/square inch horsepower

cubic feet/second US gallons/minute

dimensionless pounds (force)

pound mass/cubic foot not used b

dimensionless degrees Fahrenheit

pound-feet ounce-inches feet/second

inches/second none feet

Abbreviation in

in

% ft/sec2

Ib/ft3 ft ft

ft rpm

ft ft

ft2/sec

psi hp

ft3/sec gpm

Ibf Ibm/ft3

OF

Ib-ft oz-in ft/sec in/sec none

ft

Conversion factor8

645.2 . 1

25.4 1 1

0.3048

0.3048 0.3048

1 0.3048

1 0.3048 0.3048 1.162

92,900 1

6.895 0.7457 101.94 0.2271

1 4.448 16.02 1.162

1 (OF-32) x 5tg

1.356 720

0.3048 25.4

1 0.3048

., .

I

o (1)

~ -. 2 co Q!. "U c 3 "0

o ~ ::J ;:::;: o· ::J (Jl

I N o o o


Table 1.7 - Subscripts

Subscript Term Subscript Term Subscript Term

1 Test condition or g Gauge s Suction model

2 Specific condition max Maximum t Theoretical or prototype

a Absolute min Minimum v Velocity

atm Atmospheric mot Motor vp Vapor pressure

b Barometric ot Operating temperature w Water

d Discharge OA

dvr Driver input p

1.2.3.5 Total suction head (hs ), open suction

For open suction (wet pit) installations, the first stage impeller of the bowl assembly is submerged in a pit. The total suction head (hs) at datum is the submergence (Zw). If the average velocity head of the flow in the pit is small enough to be neglected, then:

Where:

Zw = Vertical distance in meters (feet) from free water surface to datum

1.2.3.6 Total suction head (hs ), closed suction test

For closed suction installations, the pump suction nozzle may be located either above or below grade level.

The total suction head (hs), referred to the eye of the first stage impeller is the algebraic sum of the suction gauge head (hgs) plus the velocity head (hvs ) at point of gauge attachment plus the elevation head (Zs) from the suction gauge centerline (or manometer zero) to the pump datum:

The suction head (hs) is positive when the suction gauge reading is above atmospheric pressure and negative when the reading is below atmospheric pressure by an amount exceeding the sum of the elevation head and the velocity head.

Overall unit

Pump

1.2.3.7 Total discharge head (hd)

The total discharge head (hd) is the sum of the discharge gauge head (hgd) plus the velocity head (hvd) at point of gauge attachment plus the elevation head (Zd) from the discharge gauge centerline to the pump datum:

1.2.3.8 Total head (H)

This is the measure of energy increase per unit weight of the liquid, imparted to the liquid by the pump, and is the difference between the total discharge head and the total suction head.

This is the head normally specified for pumping applications since the complete characteristics of a system determine the total head required.

1.2.3.9 Atmospheric head (hatm)

Local atmospheric pressure expressed in meters (feet) of liquid.

1.2.3.10 Friction head (hr)

Friction head is the hydraulic energy required to overcome frictional resistance of a piping system to liquid flow expressed in meters (feet) of liquid.

57


1.2.4 Condition points

1.2.4.1 Rated condition point

Rated condition applies to the rate of flow, head, net positive suction head and speed of the pump, as specified by the order.

1.2.4.2 Specified condition point

Specified condition point is synonymous with rated condition point.

1.2.4.3 Normal condition point

Applies to the point on the performance curve at which the pump will normally operate. It may be the same as the rated condition point.

1.2.4.4 Best efficiency point (BEP)

The rate of flow and head at which the pump efficiency is a maximum.

1.2.4.5 Shut off (SO)

The condition of zero flow where no liquid is flowing through the pump, but the pump is primed and running.

1.2.4.6 Allowable operating range

This is the flow range at the specified speeds with the impeller supplied as limited by cavitation, heating, vibration, noise, shaft deflection, fatigue and other similar criteria. This range is to be defined by the manufacturer. See ANSI/HI 9.6.3-1997, Centrifugal and Vertical Pumps for Allowable Operation Region.

1.2.5 Suction conditions

1.2.5.1 Submerged suction

A submerged suction exists when the centerline of the pump inlet is below the level of the liquid in the supply tank.

1.2.5.2 Static suction lift (Is)

Static suction lift is a hydraulic pressure below atmospheric at the intake port of the pump.

58

1.2.5.3 Net positive suction head available (NPSHA) t Net positive suction head available is the total suction head of liquid absolute, determined at the first stage impeller datum, less the absolute vapor pressure of the liquid at a specific rate of flow:

NPSHA = hsa - hvp

Where:

hsa = Total suction head absolute = hatm + hs

or NPSHA = hatm + hs - hvp

NOTE: hatm will vary with elevation and weather.

1.2.5.4 Net positive suction head required (NPSHR)

The amount of suction head, over vapor pressure, required to prevent more than 3% loss in total head from the first stage of the pump at a specific rate of flow.

1.2.5.5 Maximum suction pressure

This is the highest suction pressure to which the pump. will be subjected during operation. •

1.2.6 Power

1.2.6.1 Electric motor input power (Pmot)

The electrical input power to the motor.

1.2.6.2 Pump input power (Pp)

The power delivered to the pump shaft at the driver to pump coupling. It is also called brake horsepower.

1.2.6.3 Pump output power (Pw)

The power imparted to the liquid by the pump. It is also called water horsepower.

. QxHxs (Metric) P w = 366

. QxHxs (US units) P w = 3960

1.2.6.4 Overall ~fficiency (lloA)

This is the ratio of the energy imparted to the liquid ,t (Pw) by the pump to the energy supplied to the (Pmot);

that is, the ratio of the water horsepower to the power • input to the primary driver expressed in percent.

1.2.6.5 Pump efficiency (1lp)

This is the ratio of the energy imparted to the liquid by the pump (Pw) to the energy delivered to the pump shaft (P p) expressed in percent.

1.2.6.6 High-energy pump

High-energy pumps are defined as those above a certain energy level.

One parameter used in determining energy level is the total head and the density (specific gravity) of the pumped fluid. The other parameter is pump specific speed, which defines pump and impeller geometry in relative terms. Specific speed is used in conjunction with developed head and specific gravity to effectively define "high energy," while avoiding the many variables involved in other specific design and application parameters.

By using these terms and relating them to general PUIlJP operating experience, a measure of "high energy" versus "low energy" pumps is defined and

300

250

~ 200 (])

a> .§. CI)

x 150

\

\ ~


graphically represented. This definition, as represented in Figures 1.45 and 1.46, shows that high-energy pumps can be of low specific speed design, with relatively high total head, or of high specific speed design, with relatively low total head. The curve separating "low" and "high" energy pumps is of nearly constant energy level. It is not a definitive separating line, but rather a broad band and pumps falling close to this line - on either side ~ might be considered as low or high energy.

The following symbols, their definitions and units of measure apply to the figures:

Total Head x S = pump total head (per stage for multistage pumps) meters (feet) times specific gravity (S).

Specific Speed = n( 0)0.5 (H)0.75

NOTE: for double suction pumps (impellers), 0 is the total pump flow.

n = speed, rpm

o = rate of flow, m3/h (gpm)

H = total head (per stage), meters (feet)

High energy

"0 a! (]) .c: Cii

;§ 100 ~ ..........

~ Low energy ----50

o 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000

Specific Speed

Figure 1.45 - High-energy versus low-energy pumps (metric)

59


1,000

\ \ High energy

800

1\

~ ""-

~

C/) 600 x

"0 ctl (])

..c: iii ;§ 400

~ Low energy r-- ---200

o 500 1,000 1,500 2,000 2,500 3,000 3,500

Specific Speed

Figure 1.46 - High-energy versus low-energy pumps (US units)

1.2.7 Pump pressures

1.2.7.1 Working pressure (Pd)

The maximum discharge pressure that could occur in the pump when it is operated at rated speed and suction pressure for the given application.

1.2.7.2 Maximum allowable casing working pressure

This is the highest pressure at the specified pumping temperature for which the pump casing is designed. This pressure shall be equal to or greater than the maximum discharge pressure. In the case of some pumps (double suction, vertical turbine, axial split case can pumps, or multistage, for example), the maximum allowable casing working pressure on the suction side may be different from that on the discharge side.

1.2.7.3 Maximum suction pressure

The highest suction pressure to which the pump will be subjected during operation.

60

1.2.7.4 Field test pressure

The maximum hydrostatic test pressure to be used for leak testing a closed pumping system in the field if the pumps are not isolated. Generally this is taken as 125% of the maximum allowable casing working pressure. In cases where mechanical seals are used, this pressure may be limited by the pressure-containing capabilities of the seal.

NOTE: See Section 1.2.7.2 Maximum allowable casing working pressure. Consideration of which may limit the field test pressure of the pump to 125% of the maximum allowable casing working pressure on the suction side of double suction split case pumps and certain other pump types.

1.2.8 Impeller balancing

1.2.8.1 Single plane balancing (also called static balancing)

Correction of residual unbalance to a specified maximum limit by removing or adding weight in one correction plane only. Can be accomplished statically using balance rails or by spinning.

1.2.8.2 Two plane balancing (also called dynamic f' balancing)

,

Correction of residual unbalance to a specified limit by removing or adding weight in two correction planes, Accomplished by spinning on appropriate balancing machines.


61


Appendix A

References

This appendix is not part of this standard, but is presented to help the user in considering factors beyond the standard sump design.

NEMA-National Electrical Manufacturers Associations

NEMA-MG1-1993, Motors and Generators

National Electrical Manufacturers Association 2101 L Street, NW, Suite 300 Washington, D.C. 20037

62

HI Centrifugal Pump Index - 2000

Appendix B

Index

This appendix is not part of this standard, but is presented to help the user in considering factors beyond this standard.

Note: an f. indicates a figure, and a t. indicates a table.

Allowable operating range, 58 Atmospheric head, 57 Axial flow pumps, 4, 4f.

impeller between bearings-separately coupledsingle stage axial (horizontal) split case, 46f.

impeller between bearings-separately coupledsingle stage axial (horizontal) split case pump on base plate, 45f.

separately coupled single stage-(horizontal) split case, 16f.

separately coupled single stage-horizontal, 15f. separately coupled-mulitstage-(horizontal) split

case, 18f.

Bare rotor ) multistage, axially split, single or double suction

centrifugal pumps, 25 single stage, axially (horizontally) split, single or

double suction centrifugal pump, 25 BEP See Best efficiency point Best efficiency point, 58

Capacity, 55 Casing rotation, 26 Casing working pressure, 60 Centerline mounted pumps

separately coupled single stage, 41 f. separately coupled single stage (top suction), 43f. separately coupled single stage-pump on base

plate, 42f. separately coupled single stage-pump on base plate

(top suction), 44f. Centerline support pumps, 12f. Centrifugal pumps

defined, 1 nomenclature (alphabetical listing), 27t.-35t. nomenclature (numerical listing), 35t.-38t. size, 25

Condition points, 58

.. Datum, 55 • Datum elevations, 55f.

Dimensional designations, 39-46

Dimensionally interchangeable pump, 25 Duplicate performance pump, 25 Dynamic balancing; 61

Electric motor input power, 58 Elevation head, 55 End suction pumps, 4f.

submersible, 5f.

Face-mounted motor dimensions, 49t. type JM, 51 t. type JM having rolling contact bearings, 50f. type JP, 52t. type JP having rolling contact bearings, 50f.

Field test pressure, 60 Frame mounted pumps

ANSI B73.1, 13f. lined, 11 f. separately coupled single stage-mixed flow, 21 f. separately coupled single stage-self-priming, 24f. separately coupled-single stage, 10f., 39f. separately coupled-single stage (vertically

mounted),47f. separately coupled-single stage-pump on base

plate,40f. Francis vane, 3f., 3 Friction head, 57

Gauge head, 55

Head,55 atmospheric, 57 elevation, 55 friction, 57 gauge, 55 net positive suction head available, 58 net positive suction head required, 58 total, 57, 59 total discharge, 57 total suction (closed suction), 57 total suction (open suction), 57 velocity, 55

High-energy pumps, 59, 59f., 60f.

63


HP and HPH vertical solid-shaft motor dimensions, 53f., 53t., 54t.

Identical performance and dimensional pump, 25 Impeller balancing, 60 Impeller between bearings, 1 f., 2

separately coupled-multistage axial (horizontal) split case, 18f.

separately coupled-multistage radial (vertical) split case, 19f.

separately coupled-multistage radial (vertical) splitdouble casing, 20f.

separately coupled-single stage axial (horizontal) split case, 46f. .

separately coupled-single stage axial (horizontal) split case pump on base plate, 45f.

separately coupled-single stage-axial (horizontal) split case, 16f.

separately coupled-single stage-radial (vertical) split case, 17f.

Impeller designs, 2 axial flow, 4, 4f. Francis vane, 3f., 3 impeller between bearing type, 1 f., 2 mixed flow, 3, 3f. radial flow, 3, 3f. specific speed, 3f. suction specific speed, 3f.

In-line pumps, 7f. flexible coupling, 8f. rigid coupling, 9f.

Interchangeable pump, 25

Kinetic pumps impeller between bearing type, 1 f., 2 overhung impeller types, 1 f., 2, 4f.-15f., 21 f., 24f. regenerative turbine type, 1, 1 f., 2 special variations, 2 types, 1 f., 1

Letter designations, 39-46 Low-energy pumps, 59, 59f., 60f.

Maximum allowable casing working pressure, 60 Maximum suction pressure, 58, 60 Minimum spares, 27 Mixed flow pumps, 3, 3f. Motor dimensions

face-mounted, 49t. HP and HPH vertical solid-shaft, 53f., 53t., 54t. type JM, 51 t. type JM having rolling contact bearings, 50f. type JP, 52t. type JP having rolling contact bearings, 50f.

64

Net positive suction head available, 584 required,58 •

Nomenclature alphabetical listing, 27t.-35t. numerical listing, 35t.-38t.

Normal condition point, 58 NPSHA See a/so Net positive suction head available NPSHR See Net positive suction head required

Overall efficiency, 58 Overhung impeller

separately coupled single stage-frame mounted, 39f.

Overhung impeller pumps, 1 f., 2 close couple single stage-diffuser style-end suction-

submersible, Sf. close coupled single stage-end suction, 4f. close coupled single stage-in-line, 7f. close coupled single stage-submersible, 6f. close coupled-single stage-end suction, 47f. separately coupled single stage-axial flow-

horizontal, 15f. separately coupled singlestage-centerline

mounted, 41 f. separately coupled single stage-centerline mounted

(top suction), 43f. separately coupled single stage-centerline mounted 6

pump on base plate (top suction), 44f. ~ separately coupled single stage-centerline

mounted-pump on base plate, 42f. separately coupled single stage-centerline support-

API 610, 12f. separately coupled single stage-frame mounted,

1 Of. separately coupled single stage-frame mounted

ANSI B73.1, 13f. separately coupled single stage-frame mounted

lined pump, 11 f. separately coupled single stage-frame mounted

mixed flow, 21f. separately coupled single stage-frame mounted

self-priming, 24f. separately coupled single stage-in-line-f1exible

coupling, 8f. separately coupled single stage-in-line-rigid

coupling, 9f. separately coupled single stage-wet pit volute, 14f. separately coupled-single stage-frame mounted

(vertically mounted), 47f. separately coupled-single stage-frame mounted

pump on base plate, 40f.

Power, 58 Propeller pumps See Axial flow pumps

Pump efficiency, 59 ~ Pump input power, 58 , Pump output power, 58

Pump pressures, 60

Radial flow pumps, 3, 3f. separately coupled single stage-(vertical) split case,

17f. separately coupled-mulitstage-(vertical) split case,

19f. separately coupled-mulitstage-(vertical) split-

double casing, 20f. Rate of flow, 55 Rated condition point, 58 Recommended minimum spares, 27 Regenerative turbine pumps, 1 f., 1, 2

impeller between bearings-two stage, 23f. peripheral single stage, 22f. side channel single stage, 22f.

Rotating assembly multistage, axially split, single or double suction

centrifugal pumps, 26 single stage, axially (horizontally) split, single or

double suction centrifugal pump, 25 Rotation of casing, 26 Rotation of pumps, 26, 26f.

Shut off, 58 Single plane balancing, 60 SO See Shut off Spare parts, 27 Specific speed, 2,3f., 59 Specified condition point, 58 Speed,55 Static balancing, 60 Static suction lift, 58 Stuffing box

area, 48f.


Submerged suction, 58 Submergence, 57 Submersible pumps, 5f., 6f. Subscripts, 57t. Suction conditions, 58 Suction pressure, 60 Suction pumps, 4f.

datum elevations, 55f. submersible, 5f.

Suction specific speed, 3t., 3 Symbols, 56t.

Terminology alphabetical listing, 27t.-35t. numerical listing, 35t.-38t.

Total discharge head, 57 Total head, 57, 59 Total suction head

closed suction test, 57 net positive ~uction head available, 58 net positive suction head required, 58 open suction, 57

Two plane balancing, 61 Type JM motors, 51t.

having rolling contact bearings, 50t. Type JP motors, 52t.

having rOiling contact bearings, 50t.

Velocity head, 55 Vertical solid-shaft motor dimensions (HP and HPH),

53f., 53t., 54t.

Wet pit volute pumps, 14f. total suction head, 57

Working pressure, 60

65