Instruction manual

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D500242X012

POSI-SEALr Type A31A Cryogenic High

Performance Butterfly Valve

Contents

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

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

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

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

Installation 2................................

Adjusting the Actuator Travel Stops or Travel 3.

Valve Orientation 3.........................

Preparing for Installation 4...................

Installing Wafer-Style Valves 5...............

Installing Single-Flange Valves 6..............

Maintenance 7..............................

Replacing Packing 7........................

Removing the Valve from the Pipeline 8........

Removing/Installing the Seal Ring 8...........

NOVEXt Seal Installation 9................

Kel-F and Kel-F/aluminum Seal Installation 10.

Anti-Blowout Protection, Packing,

Valve Shaft(s), Disc, and Bearing

Maintenance 12...........................

Disassembly 13...........................

Installing a One-Piece Shaft 14..............

Installing a Two-Piece Shaft 15..............

Installing the Gasket Retainer 16............

Parts Ordering 17............................

Parts List 17................................

Introduction

Scope of Manual

This instruction manual provides installation,

maintenance, and parts ordering information for the

POSI-SEALr Type A31A Cryogenic

high-performance butterfly valves (see figure 1). The

Series C (3- through 6-inch Class 150 & 300 and

8-inch Class 150) feature a cast one-piece

extension. The 8-inch Class 300, and 10- through

24-inch Class 150 & 300 designs have a two-piece

extension. For information regarding actuators and

accessories, refer to separate instruction manuals.

Figure 1. Type A31A Cryogenic Valve with

Type 1035 Actuator

W7451 / IL

No person may install, operate, or maintain a Type

A31A Cryogenic valve without first D being fully

trained and qualified in valve, actuator, and

accessory installation, operation, and maintenance,

and D carefully reading and understanding the

contents of this manual. If you have any questions

about these instructions, contact your Fisher sales

office before proceeding.

Note

Neither Emerson, Emerson Process

Management, nor Fisher assume

responsibility for the selection, use, or

maintenance of any product.

Responsibility for proper selection,

use, and maintenance of any Fisher

product remains solely with the

purchaser and end-user.

Instruction Manual

Form 5482

February 2005

Cryogenic-Rotary Valve

Summary of content (24 pages)

PAGE 1
Instruction Manual Form 5482 February 2005 Cryogenic-Rotary Valve POSI-SEALr Type A31A Cryogenic High Performance Butterfly Valve Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE 2
Instruction Manual Form 5482 February 2005 Cryogenic-Rotary Valve Table 1.
PAGE 3
Instruction Manual Form 5482 February 2005 Cryogenic-Rotary Valve at the beginning of the Maintenance section in this instruction manual. CAUTION Responsibility for the safety of process media and compatibility of valve materials rests solely with the purchaser and end-user. When ordered, the valve configuration and construction materials were selected to meet particular pressure, pressure drop, temperature, and controlled fluid conditions.
PAGE 4
Instruction Manual Form 5482 February 2005 Cryogenic-Rotary Valve C0759-1 / IL KEL-F A4132-1 / IL CLASS 150, KEL‐F SEAL A3715-2 / IL CLASS 300, KEL‐F SEAL Figure 2. Maximum Pressure/Temperature Ratings Preparing for Installation CAUTION To avoid damage to the valve disc during installation, the valve must be in the fully-closed position.
PAGE 5
Instruction Manual Form 5482 February 2005 Cryogenic-Rotary Valve Table 2. Valve Body Data, Class 150 FACE-TOFACE DIMENSION(1) Table 3. Valve Body Data, Class 300 APPROXIMATE WEIGHT VALVE SIZE, INCHES SHAFT DIAMETER AT YOKE BEARING SHAFT DIAMETER AT YOKE BEARING 3 16 47.6 71.4 12 16 3 16 47.6 71.4 12 4 19 54.0 93.7 16 21 22 4 19 54.0 93.7 21 6 25 57.2 24 147.6 24 28 6 25 57.2 146.1 24 8 25 28 63.5 196.9 34 40 8 32 73.0 186.2 47 10 52 32 71.4 254.
PAGE 6
Instruction Manual Form 5482 February 2005 Cryogenic-Rotary Valve Table 4. Hex Head Screw, Stud Bolt and Cap Screw Data (1) VALVE SIZE, INCH SIZE DIA.
PAGE 7
Instruction Manual Form 5482 February 2005 Cryogenic-Rotary Valve Maintenance COLD BOX TRANSITION Valve parts are subject to normal wear and must be inspected and replaced as necessary. The frequency of inspection and replacement depends upon the severity of service conditions. WARNING 4” - 8” MIN Avoid personal injury from sudden release of process pressure.
PAGE 8
Instruction Manual Form 5482 February 2005 Cryogenic-Rotary Valve CAUTION Never use a wrench or pliers on the valve shaft. A damaged shaft could cut the packing and allow leakage. 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. 2. Then, remove the hex nuts (key 18) and lift off the packing follower (key 11). The packing (key 13) is now accessible.
PAGE 9
Instruction Manual Form 5482 February 2005 Cryogenic-Rotary Valve 3. Remove the retaining ring by placing a socket head retaining ring screw from the retaining ring in each of the two retaining ring jacking screw holes. Slowly turn the screws until the retaining ring has been lifted from the valve body. Remove the retaining ring to expose the seal ring in the T-slot area of the valve body.
PAGE 10
Instruction Manual Form 5482 February 2005 Cryogenic-Rotary Valve 2. Install the seal ring and backup ring assembly in the valve body. The wider outside diameter of the seal ring goes into the T-slot area of the valve body as shown in figure 5. Start the edge with the wider diameter into the T-slot of the valve body. 9. The final seating of the retaining ring screws can now be done. For the screw torque values, refer to table 5. 10. Repeat steps 8 and 9 two more times.
PAGE 11
Instruction Manual Form 5482 February 2005 Cryogenic-Rotary Valve LARGEST OUTSIDE DIAMETER (KEY 7) 16B5081 / DOC Figure 5. Typical Seal Installation Table 5. Torque Values for Fasteners RETAINING RING SCREWS GASKET RETAINING BOLTS FASTENER NOMINAL SIZE NSm InSlbs NSm InSlbs #10 4.6 41 4.0 35 1/4 11 100 9.
PAGE 12
Instruction Manual Form 5482 February 2005 Cryogenic-Rotary Valve SHAFT SHAFT STUD HEX NUT PACKING FOLLOWER PACKING FLANGE HEX NUT ANTI-BLOWOUT FLANGE PACKING RING STUD HEX NUT V-RING PACKING ANTI-BLOWOUT SHAFT SHOULDER OUT’BD BEARING PACKING FOLLOWER SHAFT SHOULDER TYPICAL PTFE V-RING PACKING A7090 / IL 16B5082 / DOC 3‐ THROUGH 12‐INCH SIZES 14‐ THROUGH 24‐INCH SIZES Figure 6. Anti-Blowout Protection Detail appropriate for the valve size.
PAGE 13
Instruction Manual Form 5482 February 2005 Cryogenic-Rotary Valve shaft with the double D or keyed end is called the drive shaft. The 3- through 8-inch Class 150 valves and 3 through 6-inch Class 300 valves have a one-piece shaft. Disassembly WARNING The edges of a rotating valve disc (key 3) have a shearing effect that might result in personal injury. To avoid personal injury, keep clear of the disc edges when rotating the disc. 3. Remove the Anti-Blowout Protection (refer to figure 6).
PAGE 14
Instruction Manual Form 5482 February 2005 Cryogenic-Rotary Valve the disc and shaft. Driving a taper key in the wrong direction will tighten it. Note Certain valve sizes may have a taper key that is arc spot welded in place. To remove the key, use a punch on the smaller end of the taper key and drive it out of the disc and shaft, breaking the weld.
PAGE 15
Instruction Manual Form 5482 February 2005 Cryogenic-Rotary Valve this journal bearing will be flush with the valve body bore. 5. Insert the outboard journal bearing (key 10) into the bore on top of the extension housing. 6. Install the valve disc by placing the disc into the valve body bore so the curved side of the disc passes through the end of the valve body that does not contain the T-slot. Align the shaft bore in the disc with the bearing bores. 7.
PAGE 16
Instruction Manual Form 5482 February 2005 Cryogenic-Rotary Valve the journal bearing(s). Hold the drive shaft thrust bearing (key 28) in the valve body bore against the opening of the drive shaft bearing bore. Push the drive shaft through the bearing bore just enough to hold the thrust bearing. 7. Insert the follower shaft through the bore in the valve body uncovered by removal of the gasket retainer.
PAGE 17
Instruction Manual Form 5482 February 2005 Cryogenic-Rotary Valve Key 7* Parts Ordering When corresponding with your Fisher sales office about the Type A31A Cryogenic valve, always provide the valve serial number. For valve/actuator combinations assembled at the factory, the valve serial number is stamped on the nameplate attached to the actuator. For parts information on the 14through 24-inch sizes, please contact your Fisher sales office. Note Use only genuine Fisher replacement parts.
PAGE 18
Instruction Manual Form 5482 February 2005 Cryogenic-Rotary Valve Key 13* 13* 13* 14 15* 16* 18 Description Packing Set, PTFE 3-inch 4-inch 6-inch 8-inch, Class 150 8-inch, Class 300 Packing Ring, graphite (4 req’d) 3-inch 4-inch 6-inch 8-inch, Class 150 8-inch, Class 300 Packing Washer, graphite (3 req’d) 3-inch 4-inch 6-inch 8-inch, Class 150 8-inch, Class 300 Gasket Retainer 8-inch, Class 300 and larger Gasket 8-inch, Class 300 only Retaining Ring Gasket 3-inch 4-inch 6-inch 8-inch, Class 150 8-inc
PAGE 19
Instruction Manual Form 5482 February 2005 Cryogenic-Rotary Valve 16B5086 / DOC Figure 7.
PAGE 20
Instruction Manual Form 5482 February 2005 Cryogenic-Rotary Valve ASSEMBLY 16B5085 / DOC 16B5087 / DOC Figure 7.
PAGE 21
Instruction Manual Form 5482 February 2005 Cryogenic-Rotary Valve ANTI-BLOWOUT FLANGE ANTI-BLOWOUT FLANGE NUT B2388/IL Figure 8.
PAGE 22
Instruction Manual Cryogenic-Rotary Valve 22 Form 5482 February 2005
PAGE 23
Instruction Manual Form 5482 February 2005 Cryogenic-Rotary Valve 23
PAGE 24
Instruction Manual Cryogenic-Rotary Valve Form 5482 February 2005 POSI-SEAL, NOVEX, and Fisher are marks owned by Fisher Controls International LLC, a member of the Emerson Process Management business division of Emerson Electric Co. The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their respective owners.