Instruction manual

ManualsBrandsEmerson Manualsmotor vehicle accessories & componentsA31A

www.Fisher.com

D500194X012

Type A31A High Performance Butterfly Valve

(NPS 14 through 24)

Contents

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

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

Description 1...............................

Specifications Table 2.......................

Installation 4................................

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

Before Installing the Valve 5..................

Adjusting the Actuator Travel Stops or Travel 8.

Installing the Valve 8........................

Packing Adjustment and Shaft Bonding 9......

Maintenance 10.............................

Removing and Replacing the Actuator 10......

Packing Maintenance 10.....................

Removing the Valve 11......................

Seal Maintenance 11........................

PTFE Seals 11............................

NOVEX, Phoenix III and/or

Phoenix III Fire-Tested Seals 14..........

Anti-Blowout Design, Packing, Valve Shaft,

Disc, and Bearing Maintenance 15..........

Installing the Two-Piece Shaft 16............

Gasket Retainer 18.........................

Parts Ordering 18............................

Parts List 19................................

Introduction

Scope of Manual

This instruction manual includes installation,

maintenance, and parts ordering information for NPS

14 through 24, Type A31A High-Performance

Butterfly Valves (see figure 1). Refer to separate

instruction manuals for information covering the

actuator and accessories.

Do not install, operate, or maintain a Type A31A

High-Performance Butterfly 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

Figure 1. Type A31A Valve with Bettisr Actuator and

DVC6020 Digital Valve Controller

W9134-1

your Emerson Process Managementt sales office

before proceeding.

Description

The valve is available in either a flangeless wafer

body or a single-flange (lugged) body design, with a

variety of seals and internal components. The

pressure-assisted seal provides tight shutoff against

the full class pressure range for the specific type.

The keyed shaft combines with a variety of

handlevers, handwheels, pneumatic piston or

spring-and-diaphragm actuators. Maximum inlet

pressure/temperature ratings are consistent with

CL150 and 300.

Note

Neither Emerson, Emerson Process

Management, nor any of their affiliated

entities assumes responsibility for the

selection, use and maintenance of any

product. Responsibility for the

selection, use, and maintenance of any

product remains with the purchaser

and end-user.

Instruction Manual

Form 5291

March 2008

A31A Valve

Summary of content (24 pages)

PAGE 1
Instruction Manual Form 5291 March 2008 A31A Valve Type A31A High Performance Butterfly Valve (NPS 14 through 24) Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Specifications Table . . . . . . . . . . . . . . . . . . . . . . . 2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE 2
Instruction Manual Form 5291 March 2008 A31A Valve Table 1. Specifications Valve Size and End Connection Styles NPS J 14, J 16, J 18, J 20, and J 24 valves, and in J wafer-style (flangeless) or J single-flange (lugged) with raised-face flanges, CL150 or 300 Maximum Pressure Drop(1) Consistent with CL150 and 300 pressure/temperature ratings per ASME B16.
PAGE 3
Instruction Manual Form 5291 March 2008 A31A Valve S21800 NOTE: 1 BECAUSE OF POTENTIAL EROSIVE EFFECTS AND PREMATURE SEAL FAILURE THAT CAN OCCUR, THROTTLING PTFE SEALS AT DIFFERENTIAL PRESSURES GREATER THAN 20.7 BAR (300 PSID) AT DISC ANGLES LESS THAN 20_ OPEN IS NOT RECOMMENDED. B2335 2/IL 2 TEMPERATURE LIMITATIONS DO NOT ACCOUNT FOR THE ADDITIONAL LIMITATIONS IMPOSED BY THE BACKUP RING USED WITH THIS SEAL.
PAGE 4
Instruction Manual Form 5291 March 2008 A31A Valve Table 2. Material Temperature Ratings TEMPERATURE RANGE COMPONENT AND MATERIAL OF CONSTRUCTION(1) _C Valve Body Carbon Steel (WCC or SA 516-70)(5) CF8M (316 SST) CL150 CF8M FMS 20B16 (0.04% min.
PAGE 5
Instruction Manual Form 5291 March 2008 A31A Valve the limits given in this manual or on the nameplates. D Use pressure-relieving devices as required by government or accepted industry codes and good engineering practices to protect from over-pressurizing the system. D Check with your process or safety engineer for any additional measures that must be taken to protect against process media.
PAGE 6
Instruction Manual Form 5291 March 2008 A31A Valve Table 3. Valve Body Data, CL150 VALVE SIZE, NPS SHAFT DIA. AT YOKE BEARING FACE-TO-FACE DIMENSION(1) APPROXIMATE WEIGHT MINIMUM I.D.(2) Wafer mm kg 14 30.2 92.1 331.2 71.7 94.8 16 31.75 101.6 375.2 93.9 137.9 18 38.1 114.3 418.8 139.3 178.3 20 44.45 127.0 464.1 166.9 223.6 24 57.15 154.0 580.9 255.4 Inches 350.6 Pounds 14 1-3/16 3-5/8 13.04 158 209 16 1-1/4 4 14.77 207 304 18 1-1/2 4-1/2 16.
PAGE 7
Instruction Manual Form 5291 March 2008 A31A Valve Table 4. Valve Body Data, Wafer-Style Valves, CL300 VALVE SIZE, NPS SHAFT DIA. AT YOKE BEARING FACE-TO-FACE DIMENSION(1) APPROXIMATE WEIGHT MINIMUM I.D.(2) Wafer mm Single-Flange kg 14 44.45 117.5 304.3 125.2 231.3 16 44.45 133.4 346.2 189.2 300.7 18 57.15 149.2 389.4 237.7 411.4 20 69.9 155.6 442.0 370.6 551.1 24 69.9 181.0 523.2 477.2 Inches 828.7 Pounds 14 1-3/4 4-5/8 11.98 276 510 16 1-3/4 5-1/4 13.
PAGE 8
Instruction Manual Form 5291 March 2008 A31A Valve position of the valve disc (key 2). When adjusting the travel stop or travel, make sure that the disc is from 0 to 0.76 mm (0 to 0.030 inch) away from the internal stop in the valve body (see figure 8). 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.
PAGE 9
Instruction Manual Form 5291 March 2008 A31A Valve D For Single-Flange Valves: Position the valve between the flanges. Be sure to leave enough room for the flange gaskets. Install the lower flange bolts. 2. For all Valves: Select the appropriate gaskets for the application. Flat sheet, spiral wound, or other gasket types, made to the ASME B16.5 standard or user’s standard, can be used on Type A31A valves depending on the service conditions of the application. 3.
PAGE 10
Instruction Manual Form 5291 March 2008 A31A Valve VALVE BODY ACTUATOR A D Vent the power actuator loading pressure. D Use lock-out procedures to be sure that the above measures stay in effect while you work on the equipment. D The 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.
PAGE 11
Instruction Manual Form 5291 March 2008 A31A Valve Usually, packing leakage can be eliminated by merely tightening the hex nuts (key 15) located above the packing follower (key 12) while the valve is in the pipeline. However, if leakage continues, the packing must be replaced. For PTFE ENVIRO-SEAL packing system, refer to instruction manual, ENVIRO-SEAL Packing Systems for Rotary Valves Form 5305 (see figure 10). CAUTION Never use a wrench or pliers on the keyed (upper) shaft (key 3).
PAGE 12
Instruction Manual Form 5291 March 2008 A31A Valve C0758-1/IL CUTAWAY, INTERNAL DETAILS Figure 7. Anti-Blowout Design Details WARNING Avoid personal injury or property damage caused by the impact of a falling or tipping of a large valve. Support large valves during maintenance. 2. Lay the valve flat on a work bench in a secure position with the retaining ring (key 18) and retaining ring screws (key 19) facing up.
PAGE 13
Instruction Manual Form 5291 March 2008 A31A Valve Table 6. 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 14
Instruction Manual Form 5291 March 2008 A31A Valve 6. Manually rotate the upper shaft clockwise 180 degrees to return the disc (key 2) to its closed position. 7. The final seating of the retaining ring cap screws can now be done. For the screw torque values, refer to table 6. The seal is now fully installed. Refer to the Installation procedures in this manual.
PAGE 15
Instruction Manual Form 5291 March 2008 A31A Valve 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. CAUTION When using an actuator, the actuator travel stop (or actuator travel, for actuators without adjustable stops) must be adjusted so the disc stop in the valve does not absorb the output of the actuator.
PAGE 16
Instruction Manual Form 5291 March 2008 A31A Valve follower (key 102), jam nuts (key 17), anti-blowout flange (key 10), and the spring pack assembly (key 103). See figure 10. 4. Remove the packing from around the upper shaft. 5. Remove the tangential pins or disc pins. Locate the pins (key 25) in the upper shaft (key 3) and the pin in the lower shaft (key 4), if the valve has a two-piece shaft. a. If a maintenance kit is available, use the pin extractor to remove the disc pins.
PAGE 17
Instruction Manual Form 5291 March 2008 A31A Valve WARNING Avoid personal injury or property damage caused by the impact of a falling or tipping of a large valve. Support large valves during maintenance. Note Replacement disc and shafts are provided as a matched set and both should be replaced at the same time. 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.
PAGE 18
Instruction Manual Form 5291 March 2008 A31A Valve excessive force, use appropriate care when driving the pins into the disc hub and shaft(s). Use the right tool. Do not use excessive force. serial number is stamped on the nameplate attached to the actuator. WARNING 12. Install the appropriate tangential pins, and disc pins. Use 2 tangential pins that will go through the upper shaft and 1 disc pin that will go through the lower shaft. Use only genuine Fisher replacement parts.
PAGE 19
Instruction Manual Form 5291 March 2008 A31A Valve Repair Kits PTFE Repair kits include a single PTFE packing set and anti-extrusion washers. Graphite packing sets include graphite packing rings and carbon anti-extrusion rings. See table 8 for PTFE repair kit part numbers. Table 8. Retrofit and Repair Kit Part Numbers SHAFT DIAMETER(1)(2), mm (Inch) 34.9 (1-3/8) RETROFIT KITS PTFE PTFE RRTYXRT0592 RRTYX000172 CL300 50.8 (2) RRTYXRT0602 RRTYX000182 CL150 38.
PAGE 20
Instruction Manual Form 5291 March 2008 A31A Valve Key 26* 27 28 29 30 31 33 34 35 Description Part Number Retaining Ring Gasket, Oxygen Service, CL150 (continued) NPS 20 NPS 24 CL300 NPS 14 NPS 16 NPS 18 NPS 20 NPS 24 Cap Screw Actuator (4 req’d) (not shown) Hex Nut Actuator (4 req’d) (not shown) Nameplate (not shown) Drive Screw (2 req’d) (not shown) Key Flow Direction Arrow (not shown) Packing Box Ring Disc/Shaft/Pin Assembly (not shown) Anti-Blow Flange Hex Jam Nut (4 req’d) Packing Flange Stu
PAGE 21
Instruction Manual Form 5291 March 2008 A31A Valve NPS 14 THROUGH 24 CL150 AND 300 NPS 14 CL150 NPS 14 THROUGH 24 CL300 B2388-1/IL NPS 16 THROUGH 24 CL150 Figure 9.
PAGE 22
Instruction Manual Form 5291 March 2008 A31A Valve Key 6* Backup RIng VALVE SIZE, NPS FKM NITRILE EPR CHLOROPRENE PTFE(1) Soft Seal PTFE / UHMWPE CL150 14 V111360X012 V111360X022 V111360X032 V111360X042 V111358X012 16 V111365X012 V111365X022 V111365X032 V111365X042 V111363X012 18 V111370X012 V111370X022 V111370X032 V111370X042 V111368X012 20 V111375X012 V111375X022 V111375X032 V111375X042 V111373X012 24 V111385X012 V111385X022 V111385X032 V111385X042 V111383X012 CL300 14
PAGE 23
Instruction Manual Form 5291 March 2008 A31A Valve 14B0095-A / DOC STACKING ORDER OF PTFE PACKING RINGS 34B7524-B PTFE PACKING SYSTEM 14B0086-A/DOC 34B7524-B STACKING ORDER OF GRAPHITE PACKING RINGS GRAPHITE PACKING SYSTEM NOTES: 1 VALVES WITH SHAFTS LARGER THAN 38.1 mm (1-1/2 INCH) USE GRAPHITE RINGS Figure 10.
PAGE 24
Instruction Manual Form 5291 March 2008 A31A Valve Key 21* Gasket VALVE SIZE, NPS SOFT SEAL METAL / PHOENIX III SOFT SEAL & METAL / PHOENIX III Standard and Nace Standard and Nace For Oxygen Service CL150 14 V125000X022 V125000X012 V125000X032 16 V125001X012 V125001X012 V125001X032 18 V125002X022 V125002X012 V125002X032 20 V124604X022 V124604X022 V124604X032 24 V124603X022 V124603X012 V124603X032 CL300 14 V124604X022 V124604X012 V124604X032 16 V139033X022 V139033X012 V1390