Emerson Fisher Posi Seal A31A 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

Cryogenic-Rotary Valve

Instruction Manual

Form 5482

February 2005

2

Table 1. Specifications

Available Valve Configurations

JFlangeless, wafer-style or Jsingle-flange

(lugged) control valve with a one-piece extension

housing and either NOVEX seal (standard), Kel-F

seal (optional) or Kel-F seal with Aluminum

backup V-ring (optional)

Valve Sizes

J3, J4, J6, J8, J10, J12, J14, J16,

J18, J20, or J24-inch

End Connection Style

JFlangeless, wafer-style or Jsingle flange

valve body designed to fit between raised-face

mating flanges per ASME B16.5 Class 150 or 300

Maximum Inlet Pressure/Temperature(1)

Consistent with ANSI Class J150 and J300

pressure/temperature ratings per ASME B16.34,

except that 38_C (100_F) rating is applicable to

-254_C (-425_F). NOVEX seal maximum

pressure/temperature rating is the same as the

valve body. See figure 2 for rating of Kel-F seal.

Valve Classification

Face-to-face dimensions are in compliance with

MSS SP68 and API 609 standards; valve bodies

are designed for installation between ASME

B16.5 Class 150 or 300 raised-face flanges

Materials of Construction

See Bulletin 21.1:Cryogenic-Rotary

Installed Valve Orientation

See figure 3 for orientation guidelines

Available Actuators

JType 1035, JBettis Pneumatic or JType

1051/1052

Disc Rotation

Clockwise to close

1. The pressure/temperature limits in this manual, and any applicable code or standard limitation, should not be exceeded.

Description

The Type A31A Cryogenic Series C (3- through

6-inch Class 150 & 300 and 8-inch Class 150) High

Performance Butterfly Valve features either a double

D drive shaft to allow direct coupling to the Type

1035 actuator or keyed shaft (optional). The Type

A31A Cryogenic is a reliable, high-performance

butterfly valve for cryogenic applications.

The Type A31A Cryogenic is available in either a

flangeless (wafer) or a single-flange (lugged) valve

body style and a variety of seals.

The standard seal for the Type A31A Cryogenic

valve is the NOVEXt metal seal which provides

tight shutoff, low operating torques and the

ruggedness required for cryogenic service. Kel-f and

Kel-f/aluminum seals are also available.

Installation

WARNING

Always wear protective gloves,

clothing and eyewear when performing

any installation operations to avoid

injury.

To avoid personal injury or property

damage resulting from the sudden

release of pressure, do not install the

valve assembly where service

conditions could exceed the limits

given in this manual or on appropriate

nameplates. Use pressure-relieving

devices as required by government or

accepted industry codes and good

engineering practices.

Check with your process or safety

engineer for any additional measures

that must be taken to protect against

process media.

If installing into an existing

application, also refer to the WARNING

Cryogenic-Rotary Valve

Instruction Manual

Form 5482

February 2005

3

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. Because pressure drop

and temperature range capabilities

limit some combinations of materials,

do not apply any other conditions to

the valves without first contacting your

Fisher sales office.

Before installation check the maximum allowable

inlet pressures for Type A31A Cryogenic valves

shown in figure 2 and the Specifications table.

Adjusting the Actuator Travel Stops

WARNING

The edges of a rotating valve disc have

a shearing effect that may result in

personal injury. To avoid personal

injury, keep clear of the disc edges

when rotating the disc.

CAUTION

When using an actuator, the actuator

travel stops or the actuator travel (for

actuators without adjustable stops)

must be adjusted so that the disc 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

shaft or other valve parts.

1. Locate the actuator travel stop that establishes

the closed position of the valve disc. When adjusting

the travel stop or travel, make sure that the disc is

from 0.03 to 0.76 mm (0.001 to 0.030 inch) away

from the internal stop in the valve body. This

adjustment is necessary to be certain that the

actuator output torque is fully absorbed by the

actuator travel stop or by the actuator. The internal

travel stop in the valve body should not absorb any

of the actuator torque.

2. Before installing the valve/actuator assembly in

the process line, cycle the valve several times to be

sure the valve disc returns to the proper position.

Valve Orientation

Note

When the process flow is gas, install

the valve with the shaft in the

horizontal position.

When the process flow is liquid the

valve should be installed at an incline

above horizontal of at least 20

degrees, as shown in figure 3. Inclined

installation can enhance valve

performance by preventing direct

cryogenic liquid contact with the

packing.

The Type A31A Cryogenic valve is designed for

installation with the shaft(s) in any orientation around

the pipeline: horizontal, vertical, or at an

intermediate angle. However, when installing the

valve in cryogenic service, follow the

recommendations below, which are based on

application experience:

DInstalling the valve with the extension housing

or bonnet four to six inches beyond the cold box

(see figure 3) provides space for slight boil-off of

cryogenic liquids.

DWhen installed with the extension stem inclined

20 degrees above horizontal, the vapor pocket

resulting from cryogenic liquid boil-off prevents the

colder liquid from contacting the stem packing area.

DRecommended installation for optimum seal

performance of the NOVEX and Kel-F seals is

reverse flow (into the back of the disc).

DA flow tag with an arrow is provided for proper

installation.

Cryogenic-Rotary Valve

Instruction Manual

Form 5482

February 2005

4

Figure 2. Maximum Pressure/Temperature Ratings

CLASS 150, KEL‐F SEAL CLASS 300, KEL‐F SEAL

C0759-1 / IL

KEL-F

A4132-1 / IL A3715-2 / IL

Preparing for Installation

CAUTION

To avoid damage to the valve disc

during installation, the valve must be

in the fully-closed position. If the Type

A31A Cryogenic valve is equipped with

a fail-open actuator, remove the

actuator before installing the

valve/actuator assembly or cycle the

valve into the fully closed position.

Then, take appropriate steps to ensure

that the actuator does not cause the

valve to open during installation.

1. The Type A31A Cryogenic valve is normally

shipped as part of an assembly with an actuator and

other accessories. If the valve and actuator have

been purchased separately or if the actuator has

been removed for maintenance, properly mount the

actuator and adjust valve/actuator travel and all

travel stops before inserting the valve into the line.

Follow the instructions in this manual for Adjusting

Travel stops. Also, refer to a separate actuator

instruction manual for detailed actuator mounting

and adjustment procedures.

2. If not previously removed, remove the protective

end covers from the valve and inspect the valve

body to be certain that it is free of foreign material.

Also, be certain that adjacent pipelines are free of

any foreign material, such as pipe scale or welding

slag that could damage the valve seating surfaces.

Cryogenic-Rotary Valve

Instruction Manual

Form 5482

February 2005

5

Table 2. Valve Body Data, Class 150

VALVE

SIZE,

INCHES

SHAFT

DIAMETER

AT YOKE

BEARING

FACE-TO-

FACE

DIMEN-

SION(1)

MINIMUM

I.D.(2)

APPROXIMATE

WEIGHT

Wafer Single

Flange

mm Kilograms

3 16 47.6 71.4 12 16

4 19 54.0 93.7 21 22

6 25 57.2 147.6 24 28

8 25 63.5 196.9 34 40

10 32 71.4 254.0 57 67

12 38 81.0 298.5 74 93

14 30 92 330 87 120

16 32 102 378 133 182

18 38 114 429 170 231

20 44 127 470 210 302

24 57 154 575 326 455

Inches Pounds

3 5/8 1-7/8 2.81 27 36

4 3/4 2-1/8 3.69 46 48

6 1 2-1/4 5.81 53 61

8 1 2-1/2 7.75 75 89

10 1-1/4 2-13/16 10.00 125 148

12 1-1/2 3-3/16 11.75 164 206

14 1-3/16 3-5/8 13 191 265

16 1-1/4 4 14-7/8 294 401

18 1-1/2 4-1/2 16-7/8 374 510

20 1-3/4 5 18-1/2 463 665

24 2-1/4 6-1/16 22-5/8 719 1004

1. Face-to-face dimensions are in compliance with MSS SP68 and API 609

specifications.

2. Minimum I.D. is the minimum pipe or flange I.D. required for disc swing

clearance.

CAUTION

The Type A31A Cryogenic valve is

designed for use with the appropriate

piping schedule for the specified ANSI

class. Minimum inside diameters for

flanges or pipe mating with valves are

shown in tables 2 and 3. Be certain to

align the valve accurately to avoid

contact between the disc and the

flanges. Improper alignment or

insufficient space for disc rotation

could result in damage to the disc.

Additionally, be certain that the valve

body and any adjacent pipelines are

free of foreign material, such as pipe

scale or welding slag that could

damage the valve seating surfaces.

Table 3. Valve Body Data, Class 300

VALVE

SIZE,

INCHES

SHAFT

DIAMETER

AT YOKE

BEARING

FACE-TO-

FACE

DIMEN-

SION(1)

MINIMUM

I.D.(2)

APPROXIMATE

WEIGHT

Wafer Single

Flange

mm Kilograms

3 16 47.6 71.4 12 16

4 19 54.0 93.7 21 24

6 25 57.2 146.1 24 28

8 32 73.0 186.2 47 52

10 38 85.3 230.1 80 100

12 44 94.1 281.7 103 135

14 44 117 305 142 249

16 44 133 349 213 325

18 57 149 391 259 434

20 70 159 442 401 582

24 70 181 523 512 863

Inches Pounds

3 5/8 1-7/8 2.82 27 35

4 3/4 2-1/8 3.69 46 52

6 1 2-1/4 5.75 53 61

8 1-1/4 2-7/8 7.32 104 115

10 1-1/2 3-23/64 9.06 176 220

12 1-3/4 3-45/64 11.09 227 298

14 1-3/4 4-5/8 12 314 548

16 1-3/4 5-1/4 13-3/4 470 716

18 2-1/4 5-7/8 15-3/8 570 956

20 2-3/4 6-1/4 17-13/32 884 1282

24 2-3/4 7-1/8 20-19/32 1128 1903

1. Face-to-face dimensions are in compliance with MSS SP68 and API 609

specifications.

2. Minimum I.D. is the minimum pipe or flange I.D. required for disc swing

clearance.

3. Select the appropriate gaskets for the application.

Flat sheet, spiral wound, or other gasket types,

made to ANSI B16.5 group or user’s standard, can

be used on the valves depending on the service

conditions of the application.

4. Refer to table 4 for the quantity and size of flange

bolts required.

Installing Wafer-Style Valves

WARNING

The edges of a rotating valve disc have

a shearing effect that may result in

personal injury. To avoid personal

injury, keep clear of the disc edges

when rotating the disc.

1. See figure 3 for recommended valve orientation.

See table 4 for flange bolt specifications. Install the

lower flange bolts first to form a cradle for the valve.

Cryogenic-Rotary Valve

Instruction Manual

Form 5482

February 2005

6

Table 4. Hex Head Screw, Stud Bolt and Cap Screw Data(1)

VALVE

SIZE,

INCH

NUMBER SIZE DIA. INCH &

THREAD LENGTH, INCH

Class

150

Class

300

Class

150

Class

300

Class

150

Class

300

Wafer Style with Stud Bolts

3 4 8 5/8-11 3/4-10 5-3/4 6

4 8 8 5/8-11 3/4-10 6 6-1/2

6 8 12 3/4-10 3/4-10 6-1/2 7-1/2

8 8 12 3/4-10 7/8-9 7 9

10 12 16 7/8-9 1-8 8 10

12 12 16 7/8-9 1-1/8-8 8-1/2 11

14 12 16 18 1-1/88 9-1/2 12

16 16 16 18 1-1/48 10 13-1/2

18 16 20 1-1/88 1-1/48 11 13-3/4

20 20 20 1-1/88 1-1/48 12 14-1/2

24 20 20 1-1/48 1-1/28 14 16-1/2

Wafer Style with Cap Screws

14 - - - 8- - - 1-1/88 - - - 3-1/2

16 - - - 8- - - 1-1/48 - - - 3-3/4

18 - - - 8- - - 1-1/48 - - - 4

20 - - - 8- - - 1-1/48 - - - 4

24 - - - 8- - - 1-1/28 - - - 4-1/2

Single Flange Style with Cap Screws

3 8 16 5/8-11 3/4-10 1-7/8 2

4 16 16 5/8-11 3/4-10 2 2-1/4

6 16 24 3/4-10 3/4-10 2 2-1/2

8 16 24 3/4-10 7/8-9 2-1/4 3

10 24 32 7/8-9 1-8 2-1/2 3

12 24 32 7/8-9 1-1/8-8 2-3/4 3-3/8

14 24 40 18 1-1/8-8 2-3/4 3-1/2

16 32 40 18 1-1/48 3 3-3/4

18 32 48 1-1/8-8 1-1/48 3-1/4 4

20 40 48 1-1/8-8 1-1/48 3-1/2 4

24 40 48 1-1/48 1-1/28 3-1/2 4-1/2

1. Thread engagement in accordance with ANSI B31.3 “Chemical Plant and

Petroleum Refinery Piping”.

2. Properly orient the valve according to the specific

application. For optimum performance, install the

valve so that the shaft will be on the high pressure

side of the valve at shutoff (reverse flow). Install the

valve and the gaskets between the flanges into the

cradle formed by the flange bolts.

3. Install the remaining flange bolts, making sure to

center the gaskets on the gasket sealing surfaces of

the flange and valve body.

4. Tighten the flange bolts in an alternating

criss-cross fashion to a torque value of one-fourth of

the final bolting torque. Repeat this procedure

several times increasing the torque value each time

by a fourth of the final desired torque. When the final

torque value has been applied, tighten each flange

bolt again to allow for gasket compression.

Note

The optional graphite ribbon packing

and metal bearings are composed of

all conductive material to electrically

bond the shaft to the valve for

hazardous area service, as opposed to

the non-conductive PTFE packing and

bearings.

5. For more information, refer to the Packing

Maintenance section below.

Installing Single-Flange Valves

WARNING

The edges of a rotating valve disc have

a shearing effect that may result in

personal injury. To avoid personal

injury, keep clear of the disc edges

when rotating the disc.

1. See figure 3 for recommended valve orientation.

See table 4 for hex head cap screw specifications.

2. Properly orient the valve according to the specific

application. For optimum shutoff, install the valve for

reverse flow.

3. Position the valve between the flanges. Be sure

to leave enough room for the flange gaskets. Install

the lower flange bolts.

4. Select the appropriate gaskets for the application.

Flat sheet, spiral wound, or other gasket types,

made to the ANSI B16.5 group standard or user’s

standard, can be used on the valve depending on

the service conditions of the application. Install the

gaskets and align the valve and the gaskets.

5. Install the remaining bolts.

6. Tighten the flange bolts in an alternating

criss-cross fashion to a torque value of one-fourth of

the final bolting torque. Repeat this procedure

several times increasing the torque value each time

by a fourth of the final desired torque. When you get

to the final torque value, tighten each flange bolt

again to allow for gasket compression.

Note

The optional graphite ribbon packing

and metal bearings are composed of

all conductive material to electrically

bond the shaft to the valve for

hazardous area service, as opposed to

the non-conductive PTFE packing and

bearings.

Cryogenic-Rotary Valve

Instruction Manual

Form 5482

February 2005

7

Maintenance

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

Avoid personal injury from sudden

release of process pressure. Before

performing any maintenance

operations:

DAlways wear protective gloves,

clothing and eyewear when performing

any maintenance operations to avoid

personal injury.

DDisconnect any operating lines

providing air pressure, electric power,

or a control signal to the actuator. Be

sure the actuator cannot suddenly

open or close the valve.

DUse 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.

DVent the power actuator loading

pressure and relieve any actuator

spring precompression.

DUse lock-out procedures to be

sure that the above measures stay in

effect while you work on the

equipment.

DThe valve packing box may

contain process fluids that are

pressurized even when the valve has

been removed from the pipeline.

Process fluids may spray out under

pressure when removing the packing

hardware or packing rings, or when

loosening the packing box pipe plug.

DCheck with your process or safety

engineer for any additional measures

that must be taken to protect against

process media.

Figure 3. Properly Installed Cryogenic Valve

16B5084 / DOC

COLD BOX

TRANSITION

4” - 8” MIN

20_ MIN

Replacing Packing

The Type A31A Cryogenic valve is designed so the

packing can be replaced without removing the valve

from the process pipeline, provided there is no

internal pressure. Packing may be PTFE V-rings or

graphite.

Key numbers for the parts in this section may be

found in figures 7 and 8.

CAUTION

Tighten the packing flange only

enough to prevent shaft leakage.

Excessive tightening will only

accelerate wear of the packing and

could produce higher torques on the

valve than expected.

Usually, packing leakage can be eliminated by

merely tightening the hex nuts (key 15) located

above the packing flange while the valve is in the

pipeline. However, if leakage continues, replace the

packing.

Cryogenic-Rotary Valve

Instruction Manual

Form 5482

February 2005

8

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. Refer to figure 6 for details of the

blowout protection.

3. Use a packing extractor to remove the packing.

Insert the corkscrew-like end of the tool into the first

piece of packing and pull firmly to remove the

packing. Repeat this process until all packing has

been removed.

Note

For valves equipped with non-metallic

(PTFE composition) bearings, perform

the following step to inspect and/or

replace the outboard bearing (key 10).

4. Using a formed hook or probe, carefully remove

the packing ring (key 12) and inspect the outboard

bearing (key 10) for excessive intrusion or wear.

Outboard bearings are only found on the 3- through

12-inch sizes. If necessary, remove the bearing

carefully using needle-nose pliers and install a new

bearing and existing packing ring using the packing

follower (key 11) as a driver.

CAUTION

Be careful when cleaning the packing

box. Scratches to the shaft or inside

diameter of packing bore might cause

leakage.

5. Before installing new packing, clean the packing

box.

6. Install new packing (key 13) one ring at a time,

using the packing follower (key 11) as a driver. If

using split-ring packing, stagger the splits in the

rings to avoid creating a leak path.

7. Reinstall all parts. Tighten the packing follower

nuts (key 18) as needed to stop leakage under

operating conditions.

Removing the Valve from the Pipeline

1. Disconnect any operating lines providing air

pressure, electric power, or a control signal to the

actuator. Be sure the actuator cannot suddenly open

the valve. Vent the power actuator loading pressure.

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 disc, piping or

pipe flanges can occur if the disc is

not closed when the valve is being

removed from the pipeline. If

necessary, stroke the actuator to place

the disc in the closed position while

removing the valve from the pipeline.

3. Loosen the flange bolting that holds the valve.

Make sure the valve cannot slip or twist while

loosening and removing the bolting.

4. Make certain the valve disc is closed and remove

the valve from the pipeline. Support the valve

properly and move the valve to an appropriate work

area.

Removing/Installing the Seal Ring

Unless otherwise indicated, key numbers and part

names are listed in figures 7 and 8.

Note

For valves large enough to be safely

placed on a flat surface without

tipping, it is possible to replace the

seal ring (key 7) while the actuator is

mounted to the valve and can be

accomplished by cycling the valve to

90 degrees open.

1. After removing the valve from the pipeline,

remove the manual or power actuator. Manually

rotate the drive shaft (key 4) counterclockwise until

the disc has moved a full 180 degrees away from the

closed position.

2. Lay the valve flat on a work bench in a secure

position with the retaining ring (key 2) and retaining

ring screws (key 19) facing up. Properly secure the

valve on a suitable worktable so it can not slip, twist,

or fall during maintenance. Remove all retaining ring

screws.

Cryogenic-Rotary Valve

Instruction Manual

Form 5482

February 2005

9

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.

Note

The Type A31A Cryogenic valve is

available with different seal designs

and components. See figure 4 to

identify the specific seal design.

CAUTION

To avoid possible leakage, be careful

not to damage the gasket sealing

surface, the seal ring, or the T-slot

area in the valve body while

performing the next two steps.

4. Remove and discard the retaining ring gasket

(key 16). Be careful to not scratch the gasket seating

surface.

5. Insert a regular screw driver or other similar tool

under the top edge of the seal ring (key 7), and

gently pry it out of the T-slot area in the valve body.

Take care not to damage the seal ring or T-slot area

of the valve body. After the seal ring has been

removed, clean the T-slot area, retaining ring, and, if

required, polish the disc thoroughly with fine steel

wool or other appropriate material.

NOVEXt Seal Installation

Unless otherwise indicated, key numbers and part

names are listed in figures 7 and 8. Seal installation

is shown in figure 5.

A maintenance kit with installation tools is available

through your Fisher sales office.

1. Locate the replacement seal ring (key 7) 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, if applicable, (key 8) into the

wide, outer groove of the seal ring. Figure 4. Available Seal Configurations

KEL‐F / ALUM SEAL

16B5083 / DOC

BODY

GRAPHITE

GASKET

RETAINING

RING

SEAL

RING

VALVE DISC

HIGH PRESSURE

AT SHUTOFF

BODY

GRAPHITE

GASKET

RETAINING

RING

SEAL

RING

VALVE DISC

HIGH PRESSURE

AT SHUTOFF

BODY

GRAPHITE

GASKET

RETAINING

RING

SEAL

RING

VALVE DISC

HIGH PRESSURE

AT SHUTOFF

NOVEX SEAL

KEL‐F SEAL

Cryogenic-Rotary Valve

Instruction Manual

Form 5482

February 2005

10

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.

CAUTION

Use extreme care to avoid damaging

the gasket while punching one initial

screw hole through the gasket for

alignment in the following step.

3. Once the seal ring and backup ring have been

fully installed into the valve body T-slot, the retaining

ring gasket can be installed. This gasket is a thin

graphite material. Use extreme care to avoid

damaging the gasket while punching one initial

screw hole through the gasket for alignment.

4. Install the retaining ring, and align the screw

holes in the retaining ring with the holes in the valve

body. Install the first retaining ring screw through the

punched hole in the retaining ring gasket. Install the

other retaining ring screws by pushing them through

the graphite gasket and threading them into the

valve body.

5. Tighten the retaining ring screws just enough to

eliminate any movement of the retaining ring. Do not

over-tighten the retaining ring screws.

WARNING

Avoid personal injury or property

damage caused by the impact of a

falling or tipping valve. Support large

valves during maintenance.

6. To complete this step, stand the valve up.

Support the valve securely using methods

appropriate for the valve size. If a vise or other

clamps are being used, make certain the flange

gasket sealing area of the valve body is not

damaged.

7. Manually rotate the drive shaft (key 4) to turn the

disc clockwise to meet the seal ring.

8. Place a piece of rubber, or other soft material,

between the disc and internal travel stop to protect

the disc. With a rubber mallet, tap the disc until it

contacts the internal travel stop. When the disc

makes contact with the stop, manually rotate the

disc counterclockwise back out of the seal ring to a

90-degree open position.

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.

Note

When attaching the actuator to the

valve, make sure the valve disc is not

in contact with the internal travel stop.

The valve disc should be positioned

from 0.03 to 0.76 mm (0.001 to 0.030

inch) away from the internal stop in the

valve body.

CAUTION

When using an actuator, the actuator

travel stops or the actuator travel (for

actuators without adjustable stops)

must be adjusted so that the disc 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

shaft or other valve parts.

11. Use an appropriate tool (such as a feeler gauge)

and position the disc from 0.03 to 0.76 mm (0.001 to

0.030 inch) away from the internal stop in the valve

body.

This adjustment is necessary to be certain that the

actuator output torque is fully absorbed by the

actuator travel stop or by the actuator. The internal

travel stop in the valve body should not absorb any

of the actuator torque.

Kel-F and Kel-F/Aluminum Seal

Installation

Unless otherwise indicated, key numbers and part

names are listed in figures 7 and 8.

A maintenance kit with installation tools is available

through your Fisher sales office.

1. Locate the replacement seal ring (key 7) 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. If an aluminum backup ring

(key 8) is provided, fit this over the back of the seal

ring (matching seal and backup ring angles) prior to

installation in the valve.

Cryogenic-Rotary Valve

Instruction Manual

Form 5482

February 2005

11

Figure 5. Typical Seal Installation

16B5081 / DOC

LARGEST OUTSIDE

DIAMETER (KEY 7)

Table 5. Torque Values for Fasteners

FASTENER NOMINAL

SIZE

RETAINING RING SCREWS GASKET RETAINING BOLTS

NSm InSlbs NSm InSlbs

#10 4.6 41 4.0 35

1/4 11 100 9.2 81

5/16 25 220 19 167

3/8 45 400 33 295

NSm ftSlbs NSm ftSlbs

7/16 72 53 53 39

1/2 112 83 80 59

9/16 161 119 117 86

5/8 225 166 161 119

3/4 401 296 286 210

7/8 651 480 447 330

1 976 720 651 480

1-1/8 1356 1000 837 617

Note: These values are based upon standard materials, S66286/Inconel screws and ASTM A193GRB6 bolts. For other special fastener materials, please contact your Fisher sales

office.

2. Install the seal ring, and if applicable back-up

ring, in the valve body by first placing the wider

outside diameter of the seal ring into the T-slot area

of the valve body as shown in figure 5.

3. Once the seal ring has been fully installed into

the valve body T-slot, the retaining ring gasket can

be installed. This gasket is a thin graphite material.

Use extreme care to avoid damaging the gasket

while punching one initial screw hole through the

gasket for alignment.

4. Install the retaining ring, and align the screw

holes in the retaining ring with the holes in the valve

body. Install the first retaining ring screw through the

punched hole in the retaining ring gasket. Install the

other retaining ring screws by pushing them through

the graphite gasket and threading them into the

valve body.

5. Tighten the retaining ring screws just enough to

eliminate any movement of the retaining ring. Do not

over-tighten the retaining ring screws.

WARNING

Avoid personal injury or property

damage caused by the impact of a

falling or tipping valve. Support large

valves during maintenance.

6. To complete this step, stand the valve up.

Support the valve securely using methods

Cryogenic-Rotary Valve

Instruction Manual

Form 5482

February 2005

12

Figure 6. Anti-Blowout Protection Detail

PACKING

FLANGE

ANTI-BLOWOUT

FLANGE

SHAFT SHOULDER

SHAFT

HEX NUT

STUD

PACKING

FOLLOWER

HEX NUT

TYPICAL PTFE

V-RING

PACKING

A7090 / IL

SHAFT

STUD

HEX NUT

PACKING

FOLLOWER

V-RING PACKING

OUT’BD BEARING

PACKING RING

ANTI-BLOWOUT

SHAFT SHOULDER

3‐ THROUGH 12‐INCH SIZES 14‐ THROUGH 24‐INCH SIZES

16B5082 / DOC

appropriate for the valve size. If a vise or other

clamps are being used, make certain the flange

gasket sealing area of the valve body is not

damaged.

7. Manually rotate the drive shaft (key 4) to turn the

disc clockwise to meet the seal ring.

8. Place a piece of rubber, or other soft material,

between the disc and internal travel stop to protect

the disc. With a rubber mallet, tap the disc until it

contacts the internal travel stop. When the disc

makes contact with the stop, manually rotate the

disc counterclockwise back out of the seal ring to a

90-degree open position.

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 7 and 8 two more times.

Note

When attaching the actuator to the

valve, make sure the valve disc is not

in contact with the internal travel stop.

The valve disc should be positioned

from 0.03 to 0.76 mm (0.001 to 0.030

inch) away from the internal stop in the

valve body.

CAUTION

When using an actuator, the actuator

travel stops or the actuator travel (for

actuators without adjustable stops)

must be adjusted so that the disc 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

shaft or other valve parts.

11. Use an appropriate tool (such as a feeler gauge)

and position the disc from 0.03 to 0.76 mm (0.001 to

0.030 inch) away from the internal stop in the valve

body.

This adjustment is necessary to be certain that the

actuator output torque is fully absorbed by the

actuator travel stop or by the actuator. The

internal travel stop in the valve body should not

absorb any of the actuator torque.

Anti-Blowout Protection, Packing,

Valve Shaft(s), Disc, and Bearing

Maintenance

Note

The 10- through 24-inch Class 150

valves and 8- through 24-inch Class

300 valves have a two-piece shaft. The

Cryogenic-Rotary Valve

Instruction Manual

Form 5482

February 2005

13

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.

CAUTION

When removing the actuator from the

valve, do not use a hammer or similar

tool to drive the lever off the valve

shaft. Driving the lever or actuator off

the valve shaft could damage the valve

internal parts.

If necessary, use a wheel puller to

remove the lever or actuator from the

valve shaft. It is okay to tap the wheel

puller screw lightly to loosen the lever

or actuator, but hitting the screw with

excessive force could also damage

internal valve parts.

Never use a wrench or pliers on the

drive shaft. A damaged shaft could cut

the packing and allow leakage.

Unless otherwise indicated, key numbers and part

names are listed in figures 7 and 8.

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 disc.

2. Secure the valve in an upright position. Rotate

the disc (key 3) 180 degrees counterclockwise from

the fully closed position by manually turning the drive

shaft.

3. Remove the Anti-Blowout Protection (refer to

figure 6). Remove the hex nuts and pull out the

packing follower.

Note

Class 150 and 300 3- through 24-inch

valve sizes have a bearing stop

pressed into the bearing bore of the

valve body below the extension

housing.

Do not attempt to remove the bearing

stop. If the bearing stop needs

replacement, contact your Fisher sales

office for more information.

4. Remove the packing from around the drive shaft.

Note

Different valves require slightly

different procedures because different

valve sizes/ pressure classes have

different methods of connecting the

disc and shaft(s). To identify the

proper procedures, refer to the list

below.

DClass 150, 3- through 8-inch

sizes: One-piece shaft with 1 taper key.

DClass 150, 10- and 12-inch sizes:

Two-piece shaft. 1 taper key in the

drive shaft; 1 disc pin in the follower

shaft.

DClass 300, 3- through 6-inch

sizes: One-piece shaft with 1 taper key.

DClass 300, 8- and 10-inch sizes:

Two-piece shaft. 1 taper key in the

drive shaft; 1 disc pin in the follower

shaft.

DClass 300, 12-inch size:

Two-piece shaft with 2 tangential pins

in the drive shaft; 1 disc pin in the

follower shaft.

DClass 150 and 300, 14- through

24-inch sizes: Two-piece shaft with 2

tangential pins in the drive shaft; 1

disc pin in the follower shaft.

5. Proceed as appropriate, using the following

instructions.

For valves with taper key(s), locate the taper

key(s) (key 6) which runs through the drive shaft

boss on the back of the valve disc. Using a pin

punch on the smaller end of the key, drive it out of

Cryogenic-Rotary Valve

Instruction Manual

Form 5482

February 2005

14

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.

For valves with tangential pins and/or disc pins,

locate the tangential pins (key 6) in the drive shaft

(key 4) and the disc pin (key 6) in the follower shaft

(key 5).

a. If a maintenance kit is available, use the pin

extractor to remove the disc pins. Select the

correct size pin extractor tip with screws of proper

thread size to match the thread size in the disc

pins. If a maintenance kit is not available, see

steps c and d below.

b. Screw the pin extractor tip into the pin as far

as possible. With an upward, straight sliding

motion, pull out the pin. Repeat the same

procedure for the other pins.

c. Use a threaded rod with an appropriate spacer

and nut as an extractor tool. If using a threaded

rod, choose a rod with threads that fit the inside

thread of the pins. The rod should extend several

inches above the disc when it is screwed into a

pin.

d. After screwing the rod into the pin, slide the

spacer over the rod and pin. Thread the nut onto

the rod and tighten it. As the nut is tightened, the

nut will drive the spacer against the disc. The

increasing force will draw the pin from the disc.

6. Valves with a two-piece shaft have a gasket

retainer and gasket (keys 14 and 15) on the follower

shaft side of the valve. Remove the hex head bolts

and lockwashers (keys 21 and 20) from the gasket

retainer and remove the gasket retainer and gasket

to expose the end of the follower shaft.

7. Support the valve disc properly, and remove the

follower shaft. Pull the follower shaft from the valve

body. Use a shaft extractor screwed into the puller

hole in the end of the follower shaft.

8. Support the valve disc properly, and remove the

drive shaft. Pull out the drive shaft (key 4) by

hand-pulling or by using a shaft extractor screwed

into the end of the shaft. Keep the packing box ring

(key 12) which will come out with the drive shaft.

CAUTION

To avoid damage to the disc, seal ring,

and T-slot area, do not force the disc

past the seal or T-slot area. Remove

the disc from the opposite side of the

valve body.

9. After removing the shaft(s), remove the disc and

the thrust bearings (key 28). Do not force the disc

past the seal ring or T-slot area.

10. Remove the journal bearings (key 9). Using a

suitable punch or puller, drive or pull the journal

bearing(s) into the valve body bore from the drive

shaft bearing bore. Do not attempt to remove the

bearing stop. Remove the journal bearing from the

follower shaft bearing bore. Also, remove the

outboard bearing from the extension housing (if

applicable).

11. Inspect the valve body bore, bearings, bearing

bores and packing box for damage.

Installing a One-Piece Shaft

Unless otherwise indicated, key numbers and part

names are listed in figures 7 and 8.

1. Secure the valve in an upright position. Allow for

easy access to the valve body bore. Allow for easy

access to the drive shaft bearing bore.

2. Inspect all parts removed from the valve for wear

or damage. Replace any worn or damaged parts.

Clean the valve body and all parts to be installed

with an appropriate solvent or degreaser.

CAUTION

Premature valve failure and loss of

process control may result if bearings

are improperly installed or are

damaged during installation.

3. Using caution to prevent damage to the bearing,

insert one journal bearing (key 9) from the valve

body bore into the drive shaft bearing bore until it

hits the bearing stop. 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. When correctly installed,

Cryogenic-Rotary Valve

Instruction Manual

Form 5482

February 2005

15

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. Insert the drive shaft end opposite the double D

or keyed end into the valve body through the

packing box. Push the shaft through the bearing

stop. Taking care not to dislodge the journal bearing,

push the shaft through the journal bearing and the

valve disc and into the bore on the opposite side of

the valve body.

CAUTION

To avoid damage to the taper key,

tangential pins, disc pins, valve disc,

or shaft(s) resulting from the

application of excessive force, use

appropriate care when driving the key

or pins into the disc hub and shaft(s).

Use the right tool. Do not use

excessive force.

8. Be sure the taper key disc shaft joint is free of oil

or grease. If necessary, remove any excess welding

material from the taper key.

9. Align the taper key hole in the shaft with the holes

in the shaft boss on the disc. Insert the taper key.

Use a flat-end punch to drive the taper key until solid

contact is felt. Measure the depth of the taper key

head for a reference during the following steps.

a. Drive the taper key in farther as follows:

Valve Size, Inches

Minimum Depth to Drive

Taper key After Initial Solid

Contact, mm (Inches)

ANSI Class 150 and 300,

size 3, 4, 6-inch valves, and

8-inch ANSI Class 150 valves

5 (0.188)

b. The disc, shaft, and taper key assembly must

be inspected to verify that the taper key spans

the entire shaft flat width. If so, this procedure is

complete. If not, the taper key must be driven in

farther until this condition is satisfied. However,

do not exceed the following depth limits:

Valve Size, Inches

Maximum Allowable Depth to

Drive Taper key After Initial

Solid Contact, mm (Inches)

3, and 4-inch ANSI Class 150/300 7 (0.281)

6-inch ANSI Class 300, and 8-inch

ANSI Class 150 8 (0.312)

10. After driving the taper key in place, arc spot

weld the head of the taper key to the disc. For valve

sizes 3-, 4-, and 6-inch, use an arc spot weld bead

of 1/8-inch diameter. For valve sizes 8-, 10-, and

12-inch sizes, use an arc spot weld bead of

3/16-inch diameter.

11. Install the packing as described in the Packing

Replacement section.

Installing a Two-Piece Shaft

Unless otherwise indicated, key numbers and part

names are listed in figures 7 and 8.

1. Secure the valve in an upright position. Allow for

easy access to the valve body bore. Allow for easy

access to the drive shaft bearing bore and the

follower shaft bearing bore.

2. Inspect all parts removed from the valve for wear

or damage. Replace any worn or damaged parts.

Clean the valve body and all parts to be installed

with an appropriate solvent or degreaser.

CAUTION

Premature valve failure and loss of

process control may result if bearings

are improperly installed or are

damaged during installation.

3. Using caution to prevent damage to the bearings,

insert the required number of journal bearings (key

9) 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 extension housing, the other end of the

journal bearing(s) will be flush with the valve body

bore.

The drive shaft thrust bearing (key 28) will be

installed in step 6.

4. Insert one journal bearing from the valve body

bore into the follower shaft bearing bore so it is flush

with the valve body bore.

5. Insert the outboard journal bearing (key 10) into

the bore on top of the extension housing.

6. Insert the drive shaft into the valve body through

the extension housing . Push the drive shaft through

Cryogenic-Rotary Valve

Instruction Manual

Form 5482

February 2005

16

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. Hold the follower shaft thrust bearing (key

28) in the valve body bore against the opening of the

follower shaft bearing bore. Push the follower shaft

through the bearing bore just enough to hold the

thrust bearing.

8. Install the valve disc. Place the flat side of the

disc on a flat surface. Then, move the valve body

from its upright position and suspend the valve body

over the disc so the seal ring/T-slot area is facing up.

Align the shaft bores through the disc with the drive

shaft and follower shaft bores. Lower the valve body

over the disc using caution not to dislodge or

damage the thrust bearings placed on the ends of

the shafts.

9. With the valve disc properly positioned in the

valve body, push the drive shaft and follower shaft

the rest of the way through the thrust bearings and

into the shaft bores in the valve disc.

10. Align the holes in the shafts with the holes in the

disc.

CAUTION

To avoid damage to the taper key,

tangential pins, disc pins, valve disc,

or shaft(s) resulting from the

application of excessive force, use

appropriate care when driving the key

or pins into the disc hub and shaft(s).

Use the correct tool, and do not use

excessive force.

11. Before installing the taper key, be sure the taper

key disc shaft joint is free of oil or grease. If

necessary, remove any excess welding material

from the taper key.

12. Install the appropriate taper key, tangential pins,

and disc pins. Install the taper key by aligning the

taper key hole in the shaft with the holes in the shaft

boss on the disc. Insert the taper key. Use a pin

punch to drive the taper key until solid contact is felt.

Measure the depth of the taper key head for a

reference during the following steps.

a. Drive the taper key in farther as follows:

Valve Size, Inches

Minimum Depth to Drive

Taper key After Initial Solid

Contact, mm (Inches)

8-inch ANSI Class 300, 10- and

12-inch ANSI Class 150, and 10-inch

ANSI Class 300 valves

6 (0.219)

b. The disc, shaft, and taper key assembly must

be inspected to verify that the taper key spans

the entire shaft flat width. If so, this procedure is

complete. If not, the taper key must be driven in

farther until this condition is satisfied. However,

do not exceed the following depth limits:

Valve Size, Inches

Maximum Allowable Depth to

Drive Taper key After Initial

Solid Contact, mm (Inches)

8-inch ANSI Class 300, and

10- and 12-inch ANSI Class 150 10 (0.375)

10-inch ANSI Class 300 11 (0.406)

13. After driving the taper key in place, arc spot

weld the head of the taper key to the disc. For valve

sizes 8-, 10- and 12-inch, use an arc spot weld bead

of 3/16-inch in diameter.

14. Install the packing as described in the Packing

Replacement section.

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 15) and gasket retainer

(key 14) over the end of the follower shaft. Use a

new gasket.

2. Replace the four hex head bolts (key 21) and

lockwashers (key 20) to hold the gasket retainer in

place.

3. Be sure to center the gasket over the follower

shaft bore before retightening the bolts. Tighten

down the bolts evenly in a crossover or star pattern.

Refer to table 5 for proper torque values.

Cryogenic-Rotary Valve

Instruction Manual

Form 5482

February 2005

17

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 14-

through 24-inch sizes, please contact your

Fisher sales office.

Note

Use only genuine Fisher replacement

parts. Components that are not

supplied by Fisher should not, under

any circumstances, be used in any

Fisher valve, because they will void

your warranty, might adversely affect

the performance of the valve, and

might jeopardize worker and

workplace safety.

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.

Parts List

Note

Part numbers are shown for recommended spares

only. For part numbers not shown, contact your

Fisher sales office.

Key Description Part Number

1 Valve Body

If you need a valve body as a replacement

part, order by valve size, serial number, and

desired material. Contact your Fisher sales

office for assistance.

2 Retaining Ring

3 Disc

4 Shaft

5 Follower Shaft (8-inch size, Class 300 only)

6* Taper Key

3 & 4-inch 12B9530X012

6-inch 12B9531X012

8-inch Class 150 12B9531X012

8-inch Class 300 12B9532X012

Key Description Part Number

7* Seal Ring

3-inch

Kel-F V152339X012

Kel-F w/ backup ring V160696X012

NOVEX S31600, Class 150 V158982X042

NOVEX Nit 60, Class 300 V158982X052

4-inch

Kel-F V152340X012

Kel-F w/ backup ring V155891X012

NOVEX S31600, Class 150 V158984X042

NOVEX Nit 60, Class 300 V158984X052

6-inch

Kel-F V152341X012

Kel-F w/ backup ring V156065X012

NOVEX S31600, Class 150 V158987X042

NOVEX Nit 60, Class 300 V158987X052

8-inch

Kel-F, Class 150 V152342X012

Kel-F, Class 300 V114263X012

Kel-F w/ backup ring, Class 150 V159653X012

7* Seal Ring (continued)

8-inch

Kel-F w/ backup ring, Class 300 V153418X012

NOVEX S31600, Class 150 V158992X022

NOVEX Nit 60, Class 300 V163822X012

8* Backup Ring, Aluminum

3-inch V160709X012

4-inch V155890X012

6-inch V156066X012

8-inch, Class 150 V159654X012

8-inch, Class 300 V153419X012

9* Bearing, Journal (2 req’d) (4 req’d for 8-inch Class 300)

PTFE

3-inch V166484X062

4-inch V153101X012

6-inch V166462X072

8-inch, Class 150 V167379X062

8-inch, Class 300 V166460X072

Bronze

3-inch V166484X022

4-inch V166485X022

6-inch V166462X032

8-inch, Class 150 V167379X052

8-inch, Class 300 V166460X052

10* Bearing, Outboard

PTFE

3-inch 16B3488X012

4-inch 16B3574X012

6-inch 16B3748X012

8-inch, Class 150 16B3748X012

8-inch, Class 300 16B3991X012

Bronze

3-inch 16B3488X022

4-inch 16B3574X022

6-inch 16B3748X022

8-inch, Class 150 16B3748X022

8-inch, Class 300 16B3991X022

11 Packing Follower, SST

12* Packing Box Ring

3-inch 16A6083X012

4-inch 16A6084X012

6-inch 16A6085X012

8-inch, Class 150 16A6085X012

8-inch, Class 300 16A6086X012

*Recommended spare parts

Cryogenic-Rotary Valve

Instruction Manual

Form 5482

February 2005

18

Key Description Part Number

13* Packing Set, PTFE

3-inch 1R5795X0012

4-inch 12A8995X022

6-inch 12A8832X022

8-inch, Class 150 12A8832X022

8-inch, Class 300 12A8951X022

13* Packing Ring, graphite (4 req’d)

3-inch 12A9131X012

4-inch 12A9136X012

6-inch 12A9137X012

8-inch, Class 150 12A9137X012

8-inch, Class 300 12A9138X012

13* Packing Washer, graphite (3 req’d)

3-inch 14A9771X012

4-inch 14A8363X012

6-inch 14A8365X012

8-inch, Class 150 14A8365X012

8-inch, Class 300 14A8366X012

14 Gasket Retainer

8-inch, Class 300 and larger

15* Gasket

8-inch, Class 300 only V124605X012

16* Retaining Ring Gasket

3-inch V143529X012

4-inch V143494X012

6-inch V143458X012

8-inch, Class 150 V143656X012

8-inch, Class 300 V143657X012

Key Description Part Number

17 Stud (2 req’d)

18 Hex Nut (2 req’d)

19 Retaining Ring Screw

20* Lock Washer

8-inch, Class 300 only T10226X0012

21 Hex Head Bolt

8-inch, Class 300 and larger

22 Pipe Plug, optional

23 Nameplate (not shown)

24 Drive Screw (2 req’d) (not shown)

25 Flow Direction Arrow (not shown)

26 Assembly, Disc/Shaft Contact factory

27 Key

3-inch V146070X012

4-inch V146071X012

6-inch V146072X012

8-inch V146072X012

28* Thrust Bearing (2 req’d) (not shown)

8-inch, Class 300 only, PTFE V166461X062

8-inch, Class 300 only, Bronze V166461X022

29 Key Retainer Bolt

3- & 4-inch V110745X012

6- & 8-inch V115603X012

30 Key Retainer Washer

3- & 4-inch V128487X012

6-inch V153099X012

8-inch V1115723X012

*Recommended spare parts

Cryogenic-Rotary Valve

Instruction Manual

Form 5482

February 2005

19

Figure 7. Type A31A Cryogenic 3 through 12-inch Typical Assembly

16B5086 / DOC

Cryogenic-Rotary Valve

Instruction Manual

Form 5482

February 2005

20

Figure 7. Type A31A Cryogenic 3 through 12-inch Typical Assembly (continued)

16B5085 / DOC

16B5087 / DOC

ASSEMBLY

Cryogenic-Rotary Valve

Instruction Manual

Form 5482

February 2005

21

Figure 8. 14- through 24-Inch Type A31A Cryogenic Valves (Wafer Style Shown)

(Shown without 2-piece Extension Housing)

B2388/IL

ANTI-BLOWOUT

FLANGE

ANTI-BLOWOUT

FLANGE NUT

Cryogenic-Rotary Valve

Instruction Manual

Form 5482

February 2005

22

Cryogenic-Rotary Valve

Instruction Manual

Form 5482

February 2005

23

Cryogenic-Rotary Valve

Instruction Manual

Form 5482

February 2005

24

Fisher

Marshalltown, Iowa 50158 USA

Cernay 68700 France

Sao Paulo 05424 Brazil

Singapore 128461

Emerson Process Management

www.Fisher.com

The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they

are not to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability.

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