33 12 16.26 Butterfly Valves-conformed.docx

33 12 16.26 BUTTERFLY VALVES

1.00 GENERAL

1.01 WORK INCLUDED

A. Furnish labor, materials, equipment and incidentals necessary to design, manufacture, assemble, test and install manually-operated and motor operated butterfly valves.

B. All materials of construction and testing shown in the sections below, except Section 1.02 B, are for AWWA C504 butterfly valves with pressure ratings of 250 psi and below. The materials of construction and testing requirements for the valves shown in Section 1.02 B, for pressures above 250 psi service, shall be per the manufacturer’s standard and any ASME or ANSI requirements.

1.02 QUALITY ASSURANCE

A. Acceptable Valve Manufacturers for valve pressures less than or equal to 250 psi:

1. DeZurik.

2. M&H.

3. CMB Crispin/K-Flo.

4. Pratt.

5. Valmatic.

B. Manufacturer shall verify valve end connection is suitable for pressures as shown in the schedule on Sheet G-1. Acceptable Valve Manufactures for valve pressures greater than 250 psi:

1. Bray High Performance Butterfly Valve, Double Flanged or Lugged

2. Pratt HP350, Flanged or Lugged

3. DeZurik High Performance Butterfly Valve (BHP), Cast Lugged or Flanged

4. Approved equal

C. Acceptable Electric Motor Operator Manufactures

1. Rotork

2. Limitorque

3. EIM

4. AUMA

5. No Approved Equal

D. Experience Requirements: The Manufacturer shall have had successful experience in manufacturing tight-closing, rubber-seated butterfly valves for this type service in the sizes indicated. The Manufacturer shall have at least 10 years’ experience in the manufacture of valves.

Butterfly Valves 33 12 16.26 - 1CMD11269 – C-3 Valve and Hydraulic Power Unit Pre-PurchaseNovember 2011

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E. Manufacturer’s Representative for Startup and Testing: The Valve and Actuator Manufacturers shall furnish the services of a competent service technician for the duration of time necessary to assist in the installation and adjustment of the equipment and making field acceptance tests. The Technicians shall instruct the Owner’s personnel in the proper care, maintenance, adjustment, and operation of the equipment and shall issue a written certification that the equipment has been properly installed. The Technicians shall also be on site during field pipe pressure testing and start-up of motor operated valves. The Technicians shall be factory trained and have a minimum of five years’ experience in the installation and adjustment of valves.

F. Assembly: Valve, electric motor operator, and limit switches shall be completely assembled and wired at the factory. Valve shall be adjusted for correct seating, and tested in accordance with AWWA C-504. Factory operational tests and adjustment shall be performed on each valve, with the valve in the same orientation (valve shaft horizontal or vertical) as the field installation. Correct seating of each valve disc shall be certified with five fully open-close cycles. The valve must be opened and closed 5 times and the seat must be within the allowable leakage. The test shall be repeated until the seat passes the leakage requirement. Limit switches, seat adjustments, stops and control functions shall be set and checked at the factory. Provide certified test reports. Coordinate actuator location and orientation, and seat adjustment side with plans.

1.03 SUBMITTALS

A. Submittals shall be in accordance with Section 01 33 00 “Submittal Procedures” and shall include:

1. Pre and Post submittal meeting: Vendor shall include in his bid the cost of attending a one-day pre-submittal meeting and a one-day post-submittal meeting in the offices of Freese and Nichols, in Fort Worth, Texas. The Project Manager and Project Engineer for the Vendor must be present. A sales person may attend, but not as a substitute for Project Manager or Project Engineer. Vendor shall determine the number of people attending the meeting and cover each person’s cost.

2. Shop Drawings:

a. Shop drawings showing standard cut sheets, seat orientation, operator and extension stem orientation, and materials of construction. The shop drawings for the electric motor operated valves with extension stems shall indicate the provisions for supporting the valve, gearing, extensions stem, and electric motor operator.

b. Project specific motor operator control schematics/wiring diagram.

c. Motor operator motor data sheet showing voltage, horsepower, full load amps, locked rotor amps, opening/closing times, etc.

d. Provide torque calculations through the full range of operations for motor operated valvesBoth valve and motor operator manufacturer shall submit torque calculations signed and sealed by a professional engineer. Provide torque calculations through the full range of operations for motor operated valves. Submit as record data with the initial shop drawing submittal.


3. Operation and Maintenance Manuals: Manuals shall be prepared by the Equipment Manufacturer and shall also incorporate appropriate final certified shop drawings and final wiring diagrams. Manuals may be the Manufacturer’s standard instructions, but shall be supplemented as necessary to cover any special feature not included in standard material. O&M manuals shall include storage instructions, valve installation and adjustment procedures and troubleshooting procedures.Provide torque calculations through the full range of operations for motor operated valves

4. Certified test reports indicating compliance with factory hydrostatic tests, operational tests, and seat test.

5. Equipment Installation Report for all valves.

6. STANDARDS

B. The applicable provisions of the following standards shall apply as if written here in their entirety:

1. American National Standards Institute (ANSI) Standards:

ANSI B16.1 Cast Iron Pipe Flanges and Fittings

ANSI American National Standards Institute

ANSI/NSF Standard 60/61

2. American Society for Testing and Materials (ASTM) Standards:

ASTM A48 Standard Specification for Gray Iron Castings

ASTM A126 Standard Specification for Gray Iron Castings for Valves, Flanges, and Pipe Fittings

ASTM A276 Standard Specifications for Stainless Steel Bars

ASTM A536 Standard Specification for Ductile Iron Castings

ASTM B148 Standard Specifications for Aluminum Bronze Coatings

3. American Water Works Association (AWWA) Standards:

AWWA C504 Standard for Rubber-seated Butterfly Valves

AWWA C540 Standard Specification for Power-actuating Devices for Valves and Sluice Gates

AWWA C550 Standard for Protective Interior Coatings for Valves and Hydrants

4. National Electric Manufacturers Association (NEMA)

1.04 GUARANTEES

A. Vendor shall warrant the equipment furnished under this specification for a period of three years against defects in materials and workmanship and operational failure.

B. In the event of failure of any part or parts of the equipment during the two years of service, provided that the equipment has been operated and maintained in accordance with good practice, the Vendor shall furnish, deliver, and install the defective part or parts at his own expense.


Keeley Kirksey, 09/21/11,

Coordinate with JNH if this is needed.

C. The first two years of service shall be interpreted as the 24-month period following the installation, adjusting, and acceptance testing, and the start of actual operation of the equipment, or 30 months following delivery of the equipment, whichever comes first.

2.00 PRODUCTS

2.01 VALVE CONSTRUCTION

A. General: Butterfly valves supplied under this Contract shall be of the tight-closing, rubber seated type with rubber seats that are securely attached to the valve disc or body. Valves which have motor operators maybe used for throttling service and shall have the rubber seat securely attached to the disc. Valves shall be bubble tight at rated pressures with flow in either direction and shall be satisfactory for applications involving valve operation after long periods of inactivity. Butterfly valves shall conform to the applicable requirements of AWWA C504, AWWA C540 and AWWA C550. All valves for potable water service shall comply with NSF61 standards.

B. Valve Bodies: Valve bodies shall be constructed of cast iron ASTM A126, Class B or ASTM A48, Class 40 or ductile iron in accordance with ASTM A536, Grade 65/45/12. Valve class shall be suitable for the pressure class of the adjacent pipe in which it is installed and as shown in the valve list herein. Valve shall have flanged ends with ANSI B16.1 Class 125 drilling. Two trunnions for shaft bearings shall be integral with each valve body.

C. Valve Discs: Valve discs shall be cast iron conforming to ASTM A126, Class B, aluminum bronze conforming to ASTM B148, or ductile iron conforming to ASTM A536, Grade 65/45/12.

D. Valve Shafts: Valve shafts shall be turned, ground and polished, constructed of stainless steel conforming to ASTM A276. Valve shafts may consist of a one-piece unit extending completely through the valve disc, or may be of the “stub shaft” type, which comprises two separate shafts inserted into the valve disc hubs. If of the “stub shaft” construction, each stub shaft shall be inserted into the valve disc hubs for a distance of at least 1-1/2 shaft diameters. The shaft shall be tightly connected to the disc using tapered or wedged keying devices.

E. Valve Seats: Valves shall have Neoprene, Buna-N or other synthetic rubber resilient seats to provide tight shut off at the pressure specified. The mating seat surface shall be ASTM A276, 18-8 stainless steel or a 95 percent pure nickel overlay. All valves shall have replaceable, mechanically adjustable seats. All valves 20 inches and larger shall have replaceable, mechanically adjustable seats. Epoxy adjusted seats are not acceptable. Valves 30 inches and larger shall have in-line replaceable seats.

F. Valve Bearings: Valve shall be fitted with sleeve type bearings. Bearings shall be of corrosion-resistant and “self-lubricated” materials that will not deteriorate natural or synthetic rubber.

G. Valve Shaft Seals: Where shafts project through the valve bodies for operator connection, a split-V or O-ring type shaft seal shall be provided.

H. Valve Position Indicator: The valve shall have an indicator which will indicate the valve position. The indicator shall be permanently match-marked at the factory to indicate full open and full closed position.


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2.02 VALVE OPERATORS:

A. General: The valve operator shall be designed and manufactured in accordance with the applicable requirements of AWWA C504 and AWWA C540, and shall be arranged for horizontal or vertical valve shaft installation as indicated.

B. Manual Operators:

1. Manual operators shall have all gearing totally enclosed and shall be pre-lubricated or grease packed. Operators shall be of the worm gear or travelling nut and link type with field adjustable stops to prevent over travel in the open or closed positions. Valve operators used with electric operators shall only be the worm gear type. The direction of the manual rotation shall be clockwise to close.

2. Operators for exposed valves shall be provided with a valve position indicator and a hand wheel or chain and sprocket device. Provide chain and sprocket for valves greater than 6 feet above walking surface.

3. Operators for buried valves shall have an extended stem with a 2-inch square operating nut within 12 inches of the finished grade. Provide a cast iron valve box to enclose the operating stem. Valve box shall be three-piece extension type equal to Mueller No. 10380 or Clow F2450. For valves which are installed with the shaft vertical, provide a bevel gear for vertical operation of the operating nut.

C. Valve Extension Stems and Stem Guides: Worm gear actuator shall be designed by the valve manufacturer for submerged service with operating nut pinned to shaft. Extension stem shall be 1-1/4” minimum stainless steel shaft with two (minimum) adjustable bronze bushed steady bearing supports mounted to concrete vault wall, and two Lovejoy grease filled booted U-joints, one at each end of extension stem. Supports shall be provided at 10 foot maximum spacing. All gears shall be totally enclosed and pre-lubricated or grease packed.

2.03 ELECTRIC MOTOR OPERATORS

A. General:

1. The valve operators shall be of the reversible motor type. The rate torque capacity of each operator shall be sufficient to seat, unseat, and rigidly hold in any position the valve disc that is controlled under the operating conditions.

2. Operators shall be self-contained units comprising housing, motor reversing contactor, limit switches, torque switches, relays, control transformer, gear train and auxiliary hand wheel.

3. Electric motor operators shall comply with AWWA C540 except as herein modified.4. All electric motor operators specified herein shall be a product of a single electric motor

operator manufacturer.5. Electric motor operators shall be designed for operation in corrosive, wet, 100 percent

relative humidity environments having an ambient temperature ranging from minus 30 to plus 70 degrees C.

6. Electric motor operators shall be designed to develop at least 2.0 times the required operating torque of the valves they serve. Both valve and motor operator manufacturer shall submit torque calculations signed and sealed by a professional engineer.



JNH to revise this section

7. Electric motor operators shall be designed for 30 minute duty. 8. Continuous duty shall be defined as continuous cyclic, forward and/or reverse motion

under 100 percent torque output conditions, 24-hours a day, 7-days a week. Cyclic shall be defined as a start in either the forward or reverse direction every 5 seconds (i.e., 720 movements per hour).

9. Electric motor operators shall have control functionality as described herein and shall be factory configured to interface with field control and signal wiring as shown on the Drawings.

10. Actuators shall be of a non-intrusive design, making it possible to set the torque limits, configuration of the indication contacts, and interrogate the data logger without the need to remove any electrical compartment covers.

11. Operator shall move the valve from fully open to fully closed position, or from fully closed to fully open, in approximately 360 seconds. Time of travel shall be based on a geared reducer, not jogging the motor.

12. Valve operators used with electric operators shall only be the worm gear type.

B. Operation (Pump Control Valve)

1. For normal start, engage the RUN (OPEN) contactor at the valve or remotely and the valve opens. When valve reaches 5% open, limit switch LS5 on the valve closes to start the pump motor.

2. For normal stop, engage the STOP (CLOSE) contactor at the valve or remotely and the valve closes. When the valve reaches 95% closed (5% open), limit switch LS5 on the valve opens to stop the pump motor.

3. Valve limit switch LS1 shall open when the valve lifts from its seal and act as an interlock to prevent a pump starting sequence being initiated unless the valve is seated closed.

4. Valve operator motor shall move the valve from full closed to full open or from full open to full closed in approximately 360 seconds.

5. Provide two (2) limit switches on the valve for remote indication of valve limits. Limit switch LS2 shall close when valve lifts from its seat and limit switch LS3 shall open when valve is fully open. Switches will turn-off remote lights and indicate valve is in the fully closed or open position.

6. Valve failure limit switch LS4 shall open when the valve reaches 5% open.

7. Limit switches shall be set per the Limit Switch Positions Table shown in the electrical plans.

C. Operation (Yard Piping Valve)

1. For normal start, engage the RUN (OPEN) contactor at the valve or remotely and the valve opens.

2. For normal stop, engage the STOP (CLOSE) contactor at the valve or remotely and the valve closes.

3. Valve operator motor shall move the valve from full closed to full open or from full open to full closed in approximately 180 seconds.


4. Provide two (2) limit switches on the valve for remote indication of valve limits. Limit switch LS2 shall close when valve lifts from its seat and limit switch LS1 shall open when valve is fully open. Switches will turn-off remote lights and indicate valve is in the fully closed or open position.

5. Limit switches shall be set per the Limit Switch Positions Table shown in the electrical plans.

D. Construction:

1. Operators shall be equipped with an auxiliary handwheel to provide for actuation of the valve in the event of a power failure. The handwheel shall have a clutch so that it will not turn during normal operation of the valve. The clutch shall lockout the motor so that it will not engage when the wheel is turning.

2. Electric Operators

a. Operators shall include the motor, housing, motor reversing starter, limit and torque sensing, relays, control power transformer, automatic reset overload, automatic phase detection and correction, gear train, auxiliary hand wheel and additional features as herein defined, all as a self-contained watertight enclosed electric motor operator.

b. Each operator shall have an integral three-phase, full voltage, reversing contactor with electrical and mechanical interlocks and three over-load sensing relays. The contactor shall operate on 120 VAC and shall have a control transformer 480 VAC to 120 VAC. The control transformer shall be sized with sufficient capacity to operate the contactor and the motor switch compartment heaters.

c. Electric motor operators shall be specifically designed for quarter-turn valve operation and shall have high torque, totally enclosed, non-ventilated motors with motor leads brought into the compartment without having external piping or conduit box. The operator motor shall be of sufficient size to open or close the valve against the specified maximum differential pressure when voltage to the motor terminals is 10 percent above or below nominal voltage. The operator motor shall be pre-lubricated, and all bearings shall be of the anti-friction type. The operator motor shall be designed to operate from a 480 VAC, 3-phase, 60Hz electrical service and shall be rated for continuous duty without overheating. The operator motor shall have Class F winding insulation and embedded motor winding thermal overload sensors. The motor section of the operator shall include an integral anti-condensation heater. The operator shall include integral motor control circuitry including full voltage reversing starter with automatic reset overload relay, 480 VAC to 120 VAC control power transformers, and field wiring terminals on integrated terminal strips to accommodate power, control and signal wiring field connections.

d. Limit switches shall be furnished for valve control, for remote and local OPEN_CLOSE indications. Limit switches shall be dry contacts and shall be independently adjustable at the open and closed limits. Auxiliary limit switches shall have isolated form A or B contacts rated 10 amps at 120 VAC. Refer to the Limit Switch Positions Table shown in the electrical plans.


e. Electric motor operator gearing shall consist of spline-mounted spur gears of alloy steel construction designed to provide first stage gear reduction and the specified cycle speed of the operator. The second stage gear reduction shall consist of heat-treated alloy steel worm with carburized threads hardened and ground for high efficiency and matching worm gear drive sleeve. The worm gear drive sleeve shall be of high tensile cast bronze construction with hobbed teeth. All gearing shall be oil lubricated with ball or roller-type bearings used throughout.

f. The operator enclosure shall be NEMA 4X. Space heaters with thermostat shall be provided in the enclosure of wattage suitable for keeping the compartment dry at all times. There shall be installed also a suitable breather and drain. A laminated schematic wiring diagram shall be attached and protected from the environment for maintenance use. A terminal strip shall be provided in the switch compartment. Controls and switch compartments shall be shop wired to terminal strip complete and ready for field installation. All wires to terminal strip shall be identified with heat shrinkable wire tags.

g. Motor shall be for 460-VAC, 3-phase, 60-Hertz service, and control voltage shall be 120 VAC provide by an internal transformer. Motor shall be designed for continuous use.

h. Valves shall have Local-Remote selector switch, Open/Stop/Close Pushbuttons and Open and Closed indicator lights mounted on the operator. Selector switches and pushbuttons shall be provided with water-tight boots.

3. Non-modulating valves shall receive an open signal and a closed signal from remote, and shall provide contacts for REMOTE STATUS, and OPENED, CLOSED.

a. Field wiring terminals shall be clearly identified in accordance with approved shop drawings. The operator shall be furnished with a sealed terminal chamber that allows connection of wiring without exposing control components. The terminals shall allow crimped wire terminations. All wire termination screws shall be factory installed. Terminal identification card showing plan of terminals shall be provided attached to the inside of the terminal chamber cover.Field wiring terminals shall be clearly identified in accordance with approved shop drawings. The operator shall be furnished with a sealed terminal chamber that allows connection of wiring without exposing control components. The terminals shall allow crimped wire terminations. All wire termination screws shall be factory installed. Terminal identification card showing plan of terminals shall be provided attached to the inside of the terminal chamber cover.

3.00 EXECUTION

3.01 INSTALLATION

A. Pipeline: Installation shall be in accordance with the Manufacturer’s instructions. Valve shaft shall be truly vertical or horizontal as indicated.

B. General: Make electrical connections between valves, remote power sources, and electrical equipment. Installation shall be in accordance with the manufacturer’s instructions.


3.02 FIELD QUALITY CONTROL

A. Upon completion of installation of the butterfly valves an acceptance test shall be conducted to verify the satisfactory operation of the valves. The valves must perform in a manner acceptable to the Engineer before final acceptance will be made by the Owner.

3.03 CLEAN AND ADJUST

A. Adjustments shall be in accordance with the valve manufacturer’s instructions.

3.04 SCHEDULES; VALVES

A. The required valves and certain pertinent data is given below. This list is given to facilitate description of the various valves and as an aid to plan take off and is not guaranteed to be complete.

List of Pump Station Valves 18-Inch and Larger

Item No. Service Number Required

Size and Ends

Valve Pressure Class (PSI)

Max. Diff. (psi)

Type Operator

TPS-P1-BFV1 Isolation 1 30 150B 150 Manual




TPS-P1-BFV2 Isolation 1 18 416* 205 Manual




OPS-P1-BFV1 Isolation 1 36 150B 150 Manual

OPS-P2-BFV1 Isolation 1 36 150B 150 Manual

OPS-P1-BFV2 PCV 1 18 150B 150 Motor

OPS-P2-BFV2 PCV 1 18 150B 150 Motor150

150

150

WPS-P1-BFV2 PCV 1 18 150B 150 Motor

WPS-P2-BFV2 PCV 1 18 150B 150 Motor

WPS-P3-BFV2 PCV 1 18 150B 150 Motor* High pressure valve required. Refer to plans for information not shown here.Refer to

section 1.02 B

List of Yard Piping Valves 18-Inch and Larger



Should we specify test requirement? Open/close, verify limit switches close, ...?


Size and Ends

Valve Pressure

Class (PSI)

Max. Diff. (psi)

Type Operator

TPS-YP1-BFV1 Isolation 1 30 150B 150 Manual150

TPS-YP2-BFV1 Isolation 1 48 150B 150 Manual

TPS-YP3-BFV1 Isolation 1 48 150B 150 Manual

TPS-YP5-BFV1 Isolation 1 48 270* 205 Manual

OPS-YP1-BFV1 Isolation 1 30 150B 150 Manual

OPS-YP2-BFV1 Isolation 1 36 150B 150 Manual

OPS-PL-BFV1 Isolation 1 30 150B 150 ManualOPS-PL-BFV2 Isolation 1 24 150B 150 Manual

WPS-YP1-BFV1 Isolation 1 36 18 150B 150 MotorWPS-YP1-BFV2 Isolation 1 18 150B 150 Motor

WPS-YP2-BFV1 Isolation 1 18 36 150B 150 Motor

WPS-YP2BFV2 Isolation 1 18 150B 150 Manual

WPS-YP2-BFV3 Isolation 1 36 150B 150 Motor




WPS-YP5-BFV2 Isolation 1 36 150B 150 Motor* High pressure valve required. Refer to section 1.02 B

List of Transmission Pipeline Valves 42-Inch and Larger


Size and Ends

Valve Pressure

Class (PSI)Max.

Diff. (psi)Type

Operator

TP-BFV2 Isolation 1 48 250B 150 Manual

TP-BFV3 Isolation 1 48 250B 150 Manual

TP-BFV4 Isolation 1 42 150B 150 Manual* Refer to plans for information not shown here.

END OF SECTION


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33 12 16.26 Butterfly Valves-conformed.docx

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