Instruction manual

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Fisherr POSI-SEAL™ A31A High Performance

Butterfly Valve NPS 3 through 12

Contents

Introduction 1.................................

Scope of Manual 1.............................

Specifications 2...............................

Description 2.................................

Educational Services 3.........................

Installation 3..................................

Adjusting the Actuator Travel Stops or Travel 3.....

Valve Orientation 5............................

Preparing for Installation 6......................

Installing Wafer-Style Valves 9...................

Installing Single-Flange Valves 11................

Maintenance 11................................

Replacing Packing 12..........................

Removing the Valve from the Pipeline 13..........

Removing/Installing the Seal Ring 14.............

PTFE Seal Installation 14....................

NOVEX Seal and Phoenix III Fire-Tested

Seal Installation 15......................

Cryogenic Seal Installation 16................

Anti-Blowout Protection, Packing, Valve Shaft(s),

Disk, and Bearing Maintenance 18.............

Removal 18...............................

Installing a One-Piece Shaft 20...............

Installing a Two-Piece Shaft 21...............

Installing the Gasket Retainer 23.............

Figure 1. Typical Fisher A31A Valve

W5812-1

W5811-1

Parts Ordering 23...............................

Parts List 23..................................

Introduction

Scope of Manual

This instruction manual provides installation, maintenance, and parts ordering information for the Fisher POSI-SEAL

A31A high-performance butterfly valves. Figure 1 shows typical A31A valves. For information regarding actuators and

accessories, refer to separate instruction manuals.

Do not install, operate, or maintain A31A valves without being fully trained and qualified in valve, actuator, and

accessory installation, operation, and maintenance. To avoid personal injury or property dama ge, it is important to

carefully read, understand, and follow all the c ontents of this manual, including all safety cautions and warnings. If you

have any questions about these instructions, contact your Emerson Process Management sales office before

proceeding.

Instruction Manual

D500240X012

A31A Valve

October 2012

Summary of content (24 pages)

PAGE 1
Instruction Manual A31A Valve D500240X012 October 2012 Fisherr POSI-SEAL™ A31A High Performance Butterfly Valve NPS 3 through 12 Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Educational Services . . . . . . . . . . . . . . . . .
PAGE 2
Instruction Manual A31A Valve October 2012 D500240X012 Table 1. Specifications Available Valve Configurations J Flangeless, wafer-style or J single-flange (lugged) control valve with a one-piece valve body and a two-component seal/backup O-ring, and a keyed drive shaft Valve Sizes NPS J 3, J 4, J 6, J 8, J 10, J 12 End Connection Style J Flangeless, wafer-style or J single flange valve body designed to fit between raised-face mating flanges per ASME B16.
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Instruction Manual D500240X012 A31A Valve October 2012 Educational Services For information on available courses for the Fisher POSI-SEAL A31 NPS 3 through 12 butterfly valve, as well as a variety of other products, contact: Emerson Process Management Educational Services, Registration P.O. Box 190; 301 S. 1st Ave. Marshalltown, IA 50158-2823 Phone: 800-338-8158 or Phone: 641-754-3771 FAX: 641-754-3431 e-mail: education@emerson.
PAGE 4
Instruction Manual A31A Valve October 2012 D500240X012 CAUTION When using an actuator, the actuator travel stops or the actuator travel (for actuators without adjustable stops) must be adjusted so that the disk stop in the valve body does not absorb the output of the actuator. Failure to limit actuator travel as described in the next step can result in damage to the valve shafts or other valve parts. 1. Locate the actuator travel stop that establishes the closed position of the valve disk.
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Instruction Manual A31A Valve D500240X012 October 2012 Valve Orientation Note The NPS 10 through 12 CL150 valves and NPS 8 through 12 CL300 valves have a two-piece shaft. The shaft with the keyed end is called the drive shaft. The shaft opposite the drive shaft is called the follower shaft. The NPS 3 through 8 CL150 valves and NPS 3 through 6 CL300 valves have a one-piece shaft. This one-piece shaft is keyed and is called the drive shaft.
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Instruction Manual A31A Valve October 2012 D500240X012 Table 4. Valve Body Data, CL300 SHAFT DIAMETER AT YOKE BEARING FACE-TO-FACE DIMENSION(1) mm MINIMUM I.D.(2) 3 14.3 47.6 71.6 9.1 10 4 17.5 54.0 93.7 13 14 6 23.8 58.7 147.3 20 25 8 31.8 73.0 186.2 30 41 10 41.3 84.1 231.1 61 75 12 47.6 92.1 281.7 78 107 SHAFT DIAMETER AT YOKE BEARING FACE-TO-FACE DIMENSION(1) Inches MINIMUM I.D.(2) 3 9/16 1-7/8 2.82 20 23 4 11/16 2-1/8 3.
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Instruction Manual A31A Valve D500240X012 October 2012 Figure 2.
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Instruction Manual A31A Valve October 2012 D500240X012 Figure 2.
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Instruction Manual A31A Valve D500240X012 October 2012 Figure 3.
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Instruction Manual A31A Valve October 2012 D500240X012 Figure 4. Optional Shaft-to-Valve Body Bonding Strap Assembly ACTUATOR VALVE BODY 37A6528-A A3143-2 A VIEW A-A A Table 5. Hex Head Screw, Stud Bolt and Cap Screw Data(1) VALVE SIZE, NPS NUMBER CL150 SIZE DIA.
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Instruction Manual A31A Valve D500240X012 October 2012 6. Attach the bonding strap assembly (key 131, figure 6) to the shaft with the clamp (key 130, figure 6). 7. Connect the other end of the bonding strap assembly to the valve flange cap screws. 8. For more information, refer to the Packing Maintenance section below. Installing Single-Flange Valves WARNING The edges of a rotating valve disk have a shearing effect that may result in personal injury.
PAGE 12
A31A Valve Instruction Manual October 2012 D500240X012 D Use bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure on both sides of the valve. Drain the process media from either side of the valve. D Vent the power actuator loading pressure and relieve any actuator spring precompression. D Use lock-out procedures to be sure that the above measures stay in effect while you work on the equipment.
PAGE 13
Instruction Manual D500240X012 A31A Valve October 2012 1. Before loosening any parts, isolate the valve from the line pressure, release pressure from both sides of the valve body, and drain the process media from both sides of the valve. Then, remove the hex nuts (key 15) and lift off the packing flange (key 11). 2. Remove the hex jam nuts (key 17), anti-blowout flange (key 10) and the packing follower (key 12). Also remove the anti-blowout ring (key 16) using a needle-nose pliers.
PAGE 14
A31A Valve October 2012 Instruction Manual D500240X012 2. Use bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure on both sides of the valve. Drain the process media from either side of the valve. CAUTION Damage to the valve disk, piping or pipe flanges can occur if the disk is not closed when the valve is being removed from the pipeline.
PAGE 15
Instruction Manual D500240X012 A31A Valve October 2012 1. Locate the replacement seal ring (key 5) and note the shape of the ring. The ring is wider across one edge diameter and narrower across the other edge diameter. Also, note the wide groove around the outside circumference. Before installing the seal ring into the valve body, place the backup ring (key 6) into the wide, outer groove of the seal ring. 2. Install the seal ring and backup ring assembly in the valve body.
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Instruction Manual A31A Valve October 2012 D500240X012 Figure 6. Typical Seal Installation LARGEST OUTSIDE DIAMETER (KEY 5) A5251-1* WARNING Avoid personal injury or property damage caused by the impact of a falling or tipping valve. Support large valves during maintenance. 7. To complete this step, stand the valve up. Support the valve securely using methods appropriate for the valve size.
PAGE 17
Instruction Manual D500240X012 A31A Valve October 2012 A maintenance kit with installation tools is available through your Emerson Process Management sales office. 1. Locate the replacement seal ring (key 5) and note the shape of the ring. The ring is wider across one edge diameter and narrower across the other edge diameter. Also, note the wide groove around the outside circumference.
PAGE 18
Instruction Manual A31A Valve October 2012 D500240X012 Figure 7.
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Instruction Manual D500240X012 A31A Valve October 2012 1. Remove the actuator and valve, as an assembly, from the pipeline, and then remove the actuator from the valve. Note It is not necessary to remove the retaining ring and seal ring when removing the shaft(s) and disk. 2. Secure the valve in an upright position. Rotate the disk (key 2) 180 degrees counterclockwise from the fully closed position by manually turning the drive shaft. 3. Removing the Anti-Blowout Protection (refer to figure 7): a.
PAGE 20
A31A Valve October 2012 Instruction Manual D500240X012 For valves with tangential pins and/or disk pins, locate the tangential pins (key 26) in the drive shaft (key 3) and the disk pin (key 26) in the follower shaft (key 4). a. If a maintenance kit is available, use the pin extractor to remove the disk pins. Select the correct size pin extractor tip with screws of proper thread size to match the thread size in the disk pins. If a maintenance kit is not available, see steps c and d below. b.
PAGE 21
Instruction Manual A31A Valve D500240X012 October 2012 3. Using caution to prevent damage to the bearing, insert one journal bearing (key 7) from the valve body bore into the drive shaft bearing bore until it hits the bearing stop (key 8). When properly installed, a portion of the journal bearing will extend into the valve body bore. 4. Insert one journal bearing from the valve body bore into the shaft bearing bore opposite the journal bearing installed in step 3.
PAGE 22
Instruction Manual A31A Valve October 2012 D500240X012 3. Using caution to prevent damage to the bearings, insert the required number of journal bearings (key 7) from the valve body bore into the drive shaft bearing bore. When properly installed, one end of the journal bearing(s) will be flush with the interior end of the packing box, the other end of the journal bearing(s) will be flush with the valve body bore. The drive shaft thrust bearing (key 24) will be installed in step 5. 4.
PAGE 23
Instruction Manual A31A Valve D500240X012 October 2012 14. Install the packing as described in the Packing Replacement section or in the ENVIRO-SEAL Rotary Packing Instruction Manual (D101643X012). Installing the Gasket Retainer Valves with a two-piece shaft use a gasket retainer and gasket to cover the follower shaft opening in the valve body. 1. Replace the gasket (key 21) and gasket retainer (key 20) over the end of the follower shaft. Use a new gasket. 2.
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Instruction Manual A31A Valve October 2012 D500240X012 Figure 8.