Operation Manual of Pipeline Ball Valve

Operation Manual Pipeline Ball Valve

Zhejiang Linuo Flow Control Technology Co., Ltd.Lupu, Pandai, Ruian, Zhejiang, P.R.China 325200

Tel:86-577-65099777 Fax：86-577-65386988

E-mail: [email protected]: www.linuovalve.cn

http://www.linuovalve.cn/

mailto:[email protected]

Operation Manual

CONTENTSI、 Overview ------------------------------------------------------------------------------- 3

1. Floating Ball Valve ----------------------------------------------------------------------- 32. Trunnion Mounted Ball Valve ------------------------------------------------------------ 33. Soft Seated Ball Valve -------------------------------------------------------------------- 34. Metal Seated Ball Valve ------------------------------------------------------------------- 3

II、 Applicable Range ------------------------------------------------------------------------- 5III、 Chief Parameter --------------------------------------------------------------------------- 7

1. Curve of Pressure and Temperature ------------------------------------------------------ 72. General Material Assortment --------------------------------------------------------------- 8

IV、 Product Diagram, Decomposition, Assembly and Testing Approach--------------------- 121. Product Diagram ----------------------------------------------------------------------- 122. Decomposition -------------------------------------------------------------------------- 143. Assembly ---------------------------------------------------------------------------------- 16

4. Testing Approach ------------------------------------------------------------------------- 18V、 How to Use ---------------------------------------------------------------------------------- 19VI、 Maintenance --------------------------------------------------------------------------------- 20

VII、 Delivery and Storage ------------------------------------------------------------------------- 21VIII、 Installation ----------------------------------------------------------------------------------- 22

IX、 Adjustment of Manual Ball Valve after maintenance-------------------------------------- 23X、 Precautions ------------------------------------------------------------------------------- 24

XI、 Probable Malfunction and Exclusion Methods ---------------------------------------------- 25

I、 Overview

1. Floating Ball ValveBall without back shaft will present floating condition between two separate seats, so called as Floating Ball Valve, which are especially welcomed for cutting off, allocation and changing flowing direction of medium in pipelines. It contains structures including back sealing shaft, anti fire and static, automatic pressure release and locking device. Floating ball valve is of simple structure design and good sealing performance. For the seat of outlet end sealing ring bears whole force of working pressure from the ball, so this structure will be only recommended applicable for middle and low pressure valves.

2. Trunnion Mounted Ball Valve

Trunnion Mounted Ball Valve, which is widely used for cutting application, is also called side mounted ball valve. There are two split and triple split types of body, respectively means the body is divided into unbalanced two separate pieces and triple pieces along the vertical section of flow line. Its pivot structure design assures accurate ball location. Besides, spring structure is selected as standard seat to push the seat to the ball to realize low pressure sealing performance. Valve cavity is capable of automatic emission with an installed drain valve.

2 / 24

Operation Manual

With a stationary ball, the valve will be largely supported by two pieces of stationary axis and sliding bearing, all of which are connected with ball. Therefore, the ball will not be offset under pressure of medium. Generally there are sliding bearing and rolling bearing on both sides of up and down shafts connected with the ball, this special design is much benefit for reducing the friction between shaft and bearing, and low operation torque. Therefore, this trunnion mounted ball valve is suitable for high pressure and large size valves.

3. Soft Seated Ball Valve

Valve of soft seated means the sealing ring is consisted of metal and non-metal material. High sealing performance can be guaranteed with resilient materials like PTFE, which is wildly used in most soft seated ball valves. Furthermore, this kind of soft seat presents low requirement on the machining precision and surface roughness of the sealing face. Due to good self-cleaning performance of PTFE and low friction wear, as well as the improvement of machining, valve roughness and life cycle can be largely improved.

4. Metal Seated Ball Valve

Metal seated ball valve is designed with elastic and automatic compensational seat structure. Sealing face coated with hard alloy will make the seat more reliable, temperature and corrosion resistant and long service life. Thus valve seat and ball perform good cutting, self-cleaning and suitable for regulating medium of solid and fiber. Besides, metal seated ball valve is especially applicable for mining and chemical industry with black liquid of high temperature and grey liquid, as long as the sealing face is fine coated to be high hardness as well as corrosion resistant performance. For current, surface treatment processes of metal seated ball valves in inland and oversea areas are overlaying, spray welding and spray coating.

3 / 24

Operation Manual

II． Application range

Related Standard（General）Design and Manufacturing Standard API 608,API 6D,BS 5351Flange Standard ASME B16.5,ASME B16.47,EN 1092Face to Face Dimension Standard ASME B16.10,API 6DTesting and Inspection Standard API 598,API 6DRated Value Standard of Pressure and Temperature ASME B16.34

Comply with the requirement of ATEX 94/9/EC: Group II category 2 GD, protection concept of non-electrical components:CT6

General Specifications (Nominal Size and Pressure)Nominal Size Nominal Pressure

Q41 Floating Ball Series DN15-DN20、 1/2”- 8“ PN10-PN40, Class 150-300Q47 Trunnion Mounted Ball Series DN100-DN800、2”- 32“ PN10-PN100,Class 150-2500

General Specifications (Format of Connection and Sealing Face)Connection Format Sealing Face FormatFemale Thread Entire Flat Face FFMale Thread Male Face RFFlange Male and Female Face MFButt Welding Tongue and Groove Face TGSocket Welding Ring Grooved Face RJWafer

Optional Material（General）Main Material Shaft Seat （ Soft

Seated）Sealing Seat （ Trunnion Mounted）

Packing O Ring

A216 WCB A182 F6a PTFE Hard Chrome Plating

Ductile Graphite PFA

A352 LC1 A182 F304 RPTFEOverlay Welding or Spray Welding Stellite

PTFE FEP

A105 A182 F316 NYLON Tungsten Carbide Spray Welding PPL NBR

A351 CF8 A705 630 （ 17-4PH） PPL Spray Welding

Ni60 SR

A351 CF8M 4140 PEK Ceramic Lining EPDM

4 / 24

Operation Manual

A351 CF3 VITONA351 CF3MA351 CF8CA351 CN7MA890 4A

5 / 24

Operation Manual

III，Chief Parameter

6 / 24

Operation Manual

1. 2.General Material AssortmentQ41F Floating type soft seated

Item Spare Parts Standard configuration （Casting）

Standard configuration （Forged Steel）

Acid Environment Low-Temperature Environment

1 Body/Bonnet

ASTM A216 WCB ASTM A105 ASTM A351 CF8M ASTM A352 LC1

2 Ball ASTM A105+ENP ASTM A105+ENP ASTM A182 F316 ASTM A182 F3043 Seat PTFE PTFE PTFE PTFE4 Shaft ASTM A182 F6a ASTM A182 F6a ASTM A182 F316 ASTM A182 F3045 Gasket Ductile

Graphite +Stainless Steel Band

Ductile Graphite +Stainless Steel Band



6 Bolt/Screw ASTM A193 B7 ASTM A193 B7 ASTM A193 B8M ASTM A320 L77 Nut ASTM A194 2H ASTM A194 2H ASTM A194 8M ASTM A194 48 Packing Ductile

GraphiteDuctile Graphite Ductile Graphite Ductile

Graphite9 Thrust

WasherRPTFE RPTFE RPTFE RPTFE

10 Packing Gland

ASTM A276 410 ASTM A276 410 ASTM A182 316 ASTM A182 304

11 Elastic Collar


12 Locating Washer

ASTM A216 WCB ASTM A216 WCB ASTM A351 CF8M ASTM A351 LC1

13 Anti-static Module


14 Handle Lever

ASTM A216 WCB ASTM A216 WCB ASTM A216 WCB ASTM A216 WCB

The valve is completed with actuator operator with spare parts as follow:15 Bracket ASTM A216 WCB ASTM A216 WCB ASTM A216 WCB ASTM A216 LC117 Connection

PadASTM A29 1025 ASTM A29 1025 ASTM A182 316 ASTM A350 LF2

Q41Y Floating metal seated type Item

Spare Parts Standard Configuration （Casting）



1 Body/Bonnet

ASTM A216 WCB ASTM A105 ASTM A351 CF8M ASTM A352 LC1

2 BallASTM A105+HCr ASTM A105+HCr

ASTM A182 316+HCr

ASTM A182 F304+HCr

7 / 24

Operation Manual

3 SeatASTM A182 F6a+STL ASTM A182 F6a+STL

ASTM A182 F316+STL

ASTM A182 F304+HCr

4 Seat Support Ring

ASTM A276 410 ASTM A276 410ASTM A182 F316 ASTM A182 F304

5 Seat Fire Safe Ring

Ductile Graphite Ductile Graphite Ductile Graphite Ductile Graphite

6 Dish Spring ASTM A705 631 ASTM A705 631 ASTM A705 631 ASTM A705 6317 Shaft ASTM A182 F6a ASTM A182 F6a ASTM A182 F316 ASTM A182 F3048 Gasket Ductile Graphite

+Stainless Steel Band




9 Bolt/Screw ASTM A193 B7 ASTM A193 B7 ASTM A193 B8M ASTM A320 L710 Nut ASTM A194 2H ASTM A194 2H ASTM A194 8M ASTM A194 411 Packing Ductile Graphite Ductile Graphite Ductile Graphite Ductile Graphite12 Thrust

WasherSS316+Nitriding SS316+Nitriding SS316+Nitriding SS316+Nitriding

13 Packing Gland


14 Elastic Collar


15 Handle Lever

ASTM A216 WCB ASTM A216 WCB ASTM A216 WCB ASTM A216 WCB

The valve is completed with actuator operator with spare parts as follow:16 Bracket ASTM A216 WCB ASTM A216 WCB ASTM A216 WCB ASTM A216 LC117 Connection

Pad(Casting Steel)

ASTM A29 1025

Q47F Soft Seated Trunnion Mounted SeriesItem Spare Parts Standard

Configuration （Casting）


Acid Environment

Low-Temperature Environment

1 Body/Bonnet/Down Bonnet

ASTM A216 WCB

ASTM A105 ASTM A351 CF8M

ASTM A352 LC1

2 Ball ASTM A105+ENP

ASTM A105+ENP ASTM A182 F316

ASTM A182 F304

3 Seat PTFE PTFE PTFE PTFE

4 Seat Support Ring ASTM A182 F6a ASTM A182 F6a ASTM A182

F316ASTM A182 F304

5 O Ring Viton Viton Viton PVMQ

8 / 24

Operation Manual

6 Spring ASTM A705 631

ASTM A705 631 ASTM A705 631

ASTM A705 631

7 Anti-static Module ASTM A276 304

ASTM A276 304 ASTM A276 304

ASTM A276 304

8 Up（Down）Shaft ASTM A182 F6a

ASTM A182 F6a ASTM A182 F316

ASTM A182 F304

9 Gasket Ductile Graphite +Stainless Steel Band




10 Bolt/Screw ASTM A193 B7 ASTM A193 B7 ASTM A193 B8M

ASTM A320 L7

11 Nut ASTM A194 2H ASTM A194 2H ASTM A194 8M

ASTM A194 4

12 Adjusting Gasket ASTM A182 304

ASTM A182 304 ASTM A182 316

ASTM A182 304

13 Thrust Bearing RPTFE RPTFE RPTFE RPTFE

14 Sliding Bearing SS316+RPTFE SS316+RPTFE SS316+RPTFE SS316+RPTFE

15 Blowoff (Gas) Valve ASTM A29 1025

ASTM A29 1025 ASTM A182 316

ASTM A182 304

16 Injection Valve/Non-Return Valve

ASTM A29 1025

ASTM A29 1025 ASTM A182 316

ASTM A182 304

17 Up Shaft Seat ASTM A105+ENP

ASTM A105+ENP ASTM A182 F316

ASTM A182 F304

18 Packing Ductile Graphite

Ductile Graphite

Ductile Graphite

Ductile Graphite

19Bracket(with Actuator)

ASTM A216 WCB

ASTM A216 WCB ASTM A216 WCB

ASTM A216 LC1

20 Connection Pad(Forging Steel Valve)

ASTM A105

Q47Y Metal Seated Trunnion Mounted SeriesItem Spare Parts Standard

Configuration （Casting）



1 Body/Bonnet/Down Bonnet

ASTM A216 WCB

ASTM A105 ASTM A351 CF8M ASTM A352 LC1

2 Ball ASTM A105+HCr ASTM A105+HCr ASTM A182 F316+HCr ASTM A182 F304+HCr3 Seat ASTM A182

F6a+STLASTM A182 F6a+STL

ASTM A182 F316+STL

ASTM A182 F304+STL

4 Seat Support ASTM A276 410 ASTM A276 410 ASTM A182 F316 ASTM A182 F304

9 / 24

Operation Manual

Ring5 Seat Fire Safe

RingTextile Graphite Textile Graphite Textile Graphite Textile Graphite

6 Spring ASTM A705 631 ASTM A705 631 ASTM A705 631 ASTM A705 6317 U

p（Down）Shaft


8 Gasket Ductile graphite+ stainless belt

Ductile graphite+ stainless belt



9 Bolt/Screw ASTM A193 B7 ASTM A193 B7 ASTM A193 B8M ASTM A320 L710 Nut ASTM A194 2H ASTM A194 2H ASTM A194 8M ASTM A194 411 Adjusting

GasketASTM A182 304 ASTM A182 304 ASTM A182 316 ASTM A182 304

12 Thrust Bearing

SS316+nitriding SS316+nitriding SS316+nitriding SS316+nitriding

13 Sliding Bearing


14 Blowoff (Gas) Valve


15 Injection Valve/Non-Return Valve


16 Up Shaft Seat ASTM A105+ENP

ASTM A105+ENP ASTM A182 F316 ASTM A182 F304

17 Packing Ductile Graphite Ductile Graphite Ductile Graphite Ductile Graphite18 Bracket(with

Actuator)ASTM A216 WCB

ASTM A216 WCB ASTM A216 WCB ASTM A216 LC1

19 Connection Pad(Forging Steel Valve)

ASTM A105

10 / 24

Operation Manual

1. Product Diagram, Decomposition, Assembly and Testing Approach

Product Diagram

Floating Type Forged Body Soft Seat

Floating Type Cast Steel Body Soft Seat Metal Seat

11 / 24

Operation Manual

Trunnion Mounted Type Forged Body Soft Seat

Trunnion Mounted Type Casting Steel Body Soft Seat Metal Seat

12 / 24

Operation Manual

2. Decomposition① Cautions when decomposing as below:1 To make sure that pressure of middle cavity is completely released; repeat

opening and closing must be actuated. If the medium is harmful or even explosive and flammable, the valve should be⑵

washed and cleaned with cautious to make sure there is no residual medium especially in the valve cavity，thus repeat opening and closing can be operated.

Decomposition approachA Floating Type (Uni-directional, bidirectional can be achieved by specific requirement)

Rotate Clockwise of Shaft, the ball will be at close position. ⑴ Demount handle lever, remove elastic collar and limited block.⑵ Loose connection nut, and separate body into left and right, meanwhile remove⑶ ball, seat gasket, outlet seat, spring, inlet seat(valve left is inlet, the valve body is outlet, the removed one from body are seat gasket and outlet seat, the removed one from left body are spring and inlet seat ), and conjunctional gasket from valve body. Be cautious when removing valve ball and seat, avoid collision, falling and damaging of surface.

Loose gland packing bolts and remove gland packing.⑷ Due to anti blow-out design, the valve shaft, shaft bearing, thrust bearing and⑸

packing have to be removed out at valve cavity instead of packing hole. Remove spring and inlet seat from valve left body.⑹

B Trunnion Mounted Ball Type (Bi-directional) Rotate Clockwise of Shaft, the ball will be at close position.⑴ Demount handle lever, remove elastic collar and limited block.⑵ Loose connection nut at bottom cap, remove bottom cap, gasket, adjusting gasket⑶

13 / 24

Operation Manual

and thrust bearing. Loose gland packing bolts and remove gland and packing.⑷ Loose connection plate screw, remove connection plate, gasket, adjusting gasket,⑸ thrust bearing, anti-statistic spring, finally remove valve shaft. Loose connection nut, separate right and left body, meanwhile remove valve ball,⑹ seat ring, spring, conjunctional gasket from body. Be cautious when removing valve ball and seat, avoid collision, falling and damaging of surface.

Remove valve seat, seat sealing ring and spring from left body. ⑺

C Trunnion Mounted Ball Type（Unidirectional, Single seat inlet end tightness） Rotate Clockwise of Shaft, the ball will be at close position.⑴ Demount handle lever, remove elastic collar and limited block.⑵ Loose connection nut into separate left and right body, meanwhile remove valve⑶ seat, seat sealing ring and spring from left body. Loose connection nut at bottom cap, remove bottom cap, gasket, thrust bearing. ⑷ Loose gland packing bolts and remove gland packing, packing ring and packing.⑸ Loose connection plate screw, remove connection plate, gasket, adjusting gasket,⑹ thrust bearing, anti-statistic spring, finally remove valve shaft. Remove conjunctional gasket from valve body, Be cautious when removing valve⑺ ball and seat, avoid collision, falling and damaging of surface.

Note: Be cautious when removing up and down shaft to make sure well protected ball, avoid falling and collision.

3. AssemblyValve parts are taken out to get wiped and cleaned. After removal of dust and stain, the ball, sealing portion of seat surface and stem rotating section are recognized without injuries, besides, apparent defect or wear parts should be replaced. Also there should be no scratch on left and right binding valve body surface and left and right body surface with valve seat loaded. Before assembling the ball and seat should be paired grinded, the sphere flow holes should be grinded with synthetic diamond sand bar and cleaned to achieve sealing performance. Assembling should be carried out in the following order:① Floating Ball Type(Unidirectional)

Screwing the bolts into valve body.⑴ Installing the valve shaft bearing and trust bearing on the shaft, and press the shaft⑵

bearing with trust bearing for easy assembly. ⑶ Insert stem into stem hole through cavity of valve body, the stem top end will be at closed position. Insert valve seat gasket and outlet seat into valve body, and put conjunction gasket⑷ into body positioning end; ⑸ Insert sphere into valve body and valve stem, rotate the stem 2 or 3 times, let it self-aligning; Insert spring and inlet seat into left body, fold left and right body together.⑹ Screwing up connection nut evenly. ⑺ ⑻ Finally mount packing, packing ring , gland packing, and screw in packing gland bolts tightly, and properly tighten by using tools, then mount limit block, spring ring, handle lever, etc. Be cautious, no matter trunnion mounted or floating ball type,

14 / 24

Operation Manual

instead of tightening one packing gland bolts and another, the correct way is slightly tighten one of the first one, then tighten another one, and so forth, until the clamping pressure of packing ring, packing, packing gland bolts, to ensure the seal, rotating the valve stem to confirm smooth rotation.

Trunnion mounted ball type (bi-directional)2 Screw connection bolts into valve body. 3 Insert respectively seat, seal ring, spring into valve body, left body, and insert

conjunction gasket into seat positioning end; Mount antistatic spring into valve stem, and insert ball into valve body.⑶ Mount stem bearing on the up ending of stem.⑷ Insert up stem through up stem hole, the valve stem will be close position. Rotate⑸

stem 2~3 times, and have it automatically aligning. ⑹ Close the left and right body and relatively evenly tighten the coupling nut. Mount stem bearing on down stem, then insert lower stem into lower stem hole. ⑺ Screwing in bottom cap bolts, put in thrust bearing, then adjust gasket(Be cautious,⑻

the function of adjusting gasket is maintaining the distance of lower stem and bottom cap at between-0.2mm ~ +0.2 mm), bottom gasket and bottom cap, relatively tight bottom cap coupling nut.

Subsequently amount thrust bearing, adjust gasket⑼ （Be cautious, here the function of adjusting gasket is maintaining the interval of up stem and bottom cap at between+0.5mm~1mm mm ） , coupling gasket, connection plate, coupling screw into up stem, then tighten them slightly with tools, finally mount limit block, elastic ring, handle lever, etc.

②Trunnion mounted ball type( unidirectional)The medium in trunnion mounted ball (unidirectional) is flowing from left to right, and the sealing seat is located on left body. Unless customer has special requirements of exceptional. Screwing connection bolts in valve body.⑴ Mount stem bearing and antistatic spring on valve stem.⑵ Mount stem bearing on lower stem.⑶

4 Fasten the ball on the center of valve bady.5 Mount valve seat, seal ring, spring into left body, and insert conjunction gasket

into body positioning end, hold two parts of body, screw connection bolts tightly; 6 Screw in lower head bolts, put in thrust bearing and adjust gasket(Be cautious,

these adjusting gaskets aim to maintain -0.2mm ~ +0.2 mm distance between upper stem and lower head), insert bonnet cap and gasket, screw connection bolts tightly.

7 Mount thrust bearing and adjusting gasket(Be cautious, these adjusting gaskets aim to maintain +0.5mm~1mm distance between upper stem and ball), flange gasket, gasket, connection blots on upper stem in sequence and screw tightly. Insert packing, packing ring, packing gland and gland packing gasket into platform, and tight with tool slightly, finally insert block, flexible ring and handle lever, etc.

3. Testing methodAll valve inspection should undergo related standard pressure testing and guarantee testing time as per standard. Following inspection methods are recommended:

15 / 24

Operation Manual

Tightness test: Seal two ends of valve, keep semi-opening and insert a certain pressure of medium, keep pressure for a certain period, check the conjunction parts and see if there is any leakage on packing and shelf；

① High hydraulic pressure test: seal two ends of valve, keep semi-opening and input a certain pressure of medium, then close valve, connect one face with air to check if there is any medium coming out.

② Air tightness test: seal two ends of valve, keep semi-opening and input a certain pressure of air, close the valve tightly, connect one face with air, after releasing the rest air, check if there is any bubble coming out.

The judge on valve’s qualification is based on referenced standard.

16 / 24

Operation Manual

V、 Application method1. You are recommended to read operation manual carefully before the valve assembly.2. If valve operation is handle lever or hand wheel, clock wise rotation is opening,

anticlockwise rotation is closing.3. The way to distinguish the opening and closing state of valve and opening degree is

largely depend on location of handle lever and orientation of flat end. When handle lever is parallel with pipeline, the valve will present to be opening state, and when the handle lever is vertical with pipeline, the valve will present to be closing state. For pneumatic actuated valve, there is clear signal of valve opening degree and indication.

4. Flow directionOperator is required to abide by the typecasting instructions with flow direction on valve and nameplate when doing assembling. Or the using and performance will be affected and leading potential safety hazard. No typecasting instruction with flow direction on valve means installation at random direction.

17 / 24

Operation Manual

VI、 MaintenanceThe valve is recommended to be checked and maintained at regular intervals to

achieve its inherent function. Below maintenance points are supposed to be adhered to:

1、packing sealIf there is a little leakage on packing part, properly tighten packing gland bolts under condition of non-affect of torque. If leakage is not halted by properly tightening of bolt, valve is requested to be disconnected and check whether packing is abnormal. Packing is required to be replaced if found destroyed, meanwhile, if the ball valve is mounted with manual equipment, the inspection and disassembly should be undergone after dismantling of manual equipment. After all the parts are replaced, check the valve is switching to place. If not, adjustment should be done immediately.(for detail please see “IX”, the adjustment after amendment of manual ball valve)

2、body sealing partThe conjunction part of body and left body is of RTFE gasket. Tighten conjunction bolts can reduce leakage. If leakage is not reduced after tightening, the valve is required to be separated and check whether gasket is abnormal, the conjunction gasket should be replaced if it is destroyed.

3、seat sealing partIf there is leakage on valve seat, ball valve is required to be dismantled and checked

whether the ball and seat are destroyed or deformed, related parts are required to be replaced, please note no extra particles are allowed to enter into valve body cavity.

4 、 the ball and seat are required to be facing up after replacement, so that sealing performance is not affected.

18 / 24

Operation Manual

VII、Delivery and StorageDelivery：

The valve is required to be mounted during assembly and delivery, valve bumping should be avoided to prevent damage.Storage：

The valve is required to be stored on opening state, with good sealing capping at venting channel hole, pile up relay is forbidden, neither in a wet and closed air inside.

19 / 24

Operation Manual

VIII、 AssemblyPreparation before assembly

(1) Pipeline ends should be always ready for connection process, with front and back end concentric with line and two flanges parallel with sealing face. The pipeline should be completely sustainable of ball valve’s weight, or there should be appropriate supportive platform on the line. (2) Front and back pipeline should be swept clean, any grease dirt, welding spatter and

other particle should be swept off. (3) Ball valve and its mark should be checked and verified to make sure normal full opening and closing by repeat switch operations. (4) Dismantle protective parts on both ends of flanges. (5) Check all holes on the valve and clean probable stain. Because any tiny particle can

be damage to seat sealing face.Assembly (1) Pay attention to flow direction requirement when assembling valve on the pipeline. Manual operated ball valve can be mounted on any location of the line. However, ball valve with gearbox or pneumatic actuator operator must be mounted to stand on end (i.e. mounting the ball valve parallel with line and with actuator over the line. (2) The valve flange and pipeline flange should be mounted with sealing gaskets as per requirement.

(3) bolts on flanges should be symmetrical, subsequent and tightened equally.(4) Connect pneumatic connector (while pneumatic actuator is adopted).Checking after assembly(1) Operate actuator repeatedly to open and close valve, to make sure the valve is of

flexible and normal performance. (2) Check the sealing performance on the conjunctional face between pipeline and ball valve as per requirement.

20 / 24

Operation Manual

IX、 Adjustment of Manual Ball Valve after maintenanceAdjustment of Manual Ball Valve after maintenance places an important role in valve opening and closing location (may cause opening and closing not in place). Thus check on valve opening and closing location after maintenance and assembly should be carried out as per following debugging instructions: 1.Adjust opening location: Loose related adjusting bolts to full opening of valve, then tighten related adjusting bolts. 2.Adjust closing location: Loose adjusting bolts to full closing of valve, then tighten related adjusting bolts.

21 / 24

Operation Manual

X、 Precautions1, Customer is not allowed to set the valve at semi-opening state for a long period(t≥120 minutes). The valve should be opened in place to avoid damage to performance and affect flow function. 2, if the valve is used in a dangerous environment, user is recommended to use locking system to avoid mal-operation.3, accurate testing should be adopted as per related standard. 4, there shall be specific indication on special working condition while putting an order. 5, any particle should be wiped out when connecting the pipeline to avoid damage of sealing seat and guarantee valve performance.

6, all connector parts should be tightened equally while maintaining so that no extra force. 7, the pipeline should be assured of enough sustainability to valve weight, and extra supportive plate or bracket should be mounted when necessary.

8, pay attention to flow direction requirement on type casting and name plate when assembly, to make sure that medium flow direction is accordance with indicated direction.

22 / 24

Operation Manual

XI、 Trouble shooting

Malfunction Possible cause SolutionsShaft rotates rigidly and jammed

1. Over stress on packing2. Damage or accumulated

dirt between shaft and related parts

1. Loose bolts and re-adjust2. Disconnect to repair and

clean dirt3. Disconnect and clean

Leakage through seat or body

linkage flanges

1. Lack of pretightening force

2. Damage on sealing face or dirt

3. Deformation of seat or invalid

1. Increase pretightening force2. Repair and grind sealing face

and wipe dirt3. Replace seat

Leakage through packing

1. Lack of packing force2. Packing damage or

invalid

1. Tighten gland bolts2. Replace packing

Leakage on conjunction part

1. Flange bolts loose on conjunctional part

2. Conjunctional gasket damage or invalid

1. Tighten bolt 2. Replace conjunctional gasket

XII. Storage and Transportation

10.1. Products shall be stored in a dry and airy indoor where relative humidity is no more than 80%. Products shall not be exposed to ambient containing harmful substance which could lead valve corrosion.

10.2. Do not open packing until valve installation to prevent impurities entering inside valve with possible leakage.

10.3. Valve shall be secured firmly in transportation process with protective measures against rain and snow.

XIII. Quality Guarantee

Warranty period is executed as per relevant provisions in the firm contract. During warranty

period, all charges for maintenance and replacement resulted by the quality defects is

undertook by manufactures. If the malfunction is caused by improper operation of products

and not following the operation instruction stated in this document, all charges for

maintenance and replacement resulted from which shall be undertook by users.

IX. Service Commitment

23 / 24

Operation Manual

Linuo will keep tracking on performance satisfactory of product delivered and customer service to specific requirement is available upon request.

24 / 24

Operation Manual of Pipeline Ball Valve

Documents

Transcript of Operation Manual of Pipeline Ball Valve