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Fisherr POSI-SEAL™ A31D Double-Flange

High-Performance Butterfly Valve

Contents

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

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

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

A31D Valve Specifications and Materials

of Construction 2...........................

Educational Services 2.........................

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

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

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

Adjusting the Actuator Travel Stops or Travel 7.....

Installing the Valve 7...........................

Packing Adjustment and Shaft Bonding 8.........

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

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

Packing Maintenance 11........................

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

Seal Maintenance 12...........................

PTFE Seals 12.............................

NOVEX, Phoenix III and/or

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

Anti-Blowout Design, Packing, Valve Shaft,

Disk, and Bearing Maintenance 17.............

Installing the Two-Piece Shaft 20.............

Gasket Retainer 22............................

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

Parts List 25...................................

Figure 1. Fisher A31D Valve with 2052 Actuator

X0704

Introduction

Scope of Manual

This instruction manual includes installation, maintenance, and parts ordering information for Fisher POSI-SEAL A31D

double-flange 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 an A31D valve without being fully trained and qualified in valve, actuator, and

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

carefully read, understand, and follow all the contents 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

D500248X012

A31D Valve

April 2014

Summary of content (36 pages)

PAGE 1
Instruction Manual A31D Valve D500248X012 April 2014 Fisherr POSI-SEAL™ A31D Double-Flange High-Performance Butterfly Valve Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 A31D Valve Specifications and Materials of Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Educational Services . . .
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Instruction Manual A31D Valve D500248X012 April 2014 A31D Valve Specifications and Materials of Construction Table 1. Fisher A31D Valve Specifications SPECIFICATION Valve Body Size NPS 3, 4, 6, 8, 10, 12, 14, 16, 18, 20, and 24 Pressure Rating Consistent with CL150 and 300 per ASME B16.34 Valve Body Materials WCC Steel CF8M Stainless Steel Disk Materials CF8M Stainless Steel End Connections Mates with RF flanges per ASME B16.
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Instruction Manual A31D Valve D500248X012 April 2014 Installation Recommended or ”preferred” installation for the A31D valve is with the flow into the shaft side of the disk (retaining ring downstream from the high pressure side of the valve). The standard soft seal and standard Phoenix III seal offer ANSI/FCI 70-2 Class VI, bidirectional shutoff. The Phoenix III seal for fire-tested applications must be installed in the preferred direction.
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A31D Valve April 2014 Instruction Manual D500248X012 CAUTION Damage to the disk will occur if any pipe flanges or piping connected to the valve interfere with the disk rotation path. If piping flange has a smaller inner diameter than specified for schedule 80 piping, measure carefully to be certain the disk rotates without interference before placing the valve into operation.
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Instruction Manual A31D Valve D500248X012 April 2014 Table 2. Stud Bolt and Cap Screw Chart for Double-Flange Valves A31D, CL150, ISO 5752 BUTTERFLY SHORT SERIES VALVE SIZE, NPS 3 4 6 8 10 12 14 16 18 20 24 No. of Through Holes 8 8 8 8 16 16 16 24 24 32 32 No. of Tapped Holes --- 8 8 8 8 8 8 8 8 8 8 Size-Dia. Inch & Thread 5/8 - 11 5/8 - 11 3/4 - 10 3/4 - 10 7/8 - 9 7/8 - 9 1-8 1-8 1-1/8 1-1/8 1-1/4 - 8 No.
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Instruction Manual A31D Valve D500248X012 April 2014 Figure 2.
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Instruction Manual A31D Valve D500248X012 April 2014 Table 4. Valve Weights SIZE CL150 CL300 NPS kg lb kg lb 3 15 33 28 63 4 25 56 35 77 6 34 76 65 143 8 54 118 156 343 10 81 178 176 388 12 110 243 294 649 14 152 335 345 760 16 201 443 563 1240 18 243 535 591 1303 20 277 611 706 1556 24 434 956 1307 2881 An A31D valve is normally shipped as part of an assembly with an actuator and other accessories such as a valve positioner.
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A31D Valve Instruction Manual April 2014 D500248X012 Refer to table 2 for the quantity and size of line bolting required to install the valve in the pipeline. CAUTION To avoid damage to the valve disk during installation, the valve must be in the fully closed position. If the A31D 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.
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Instruction Manual A31D Valve D500248X012 April 2014 Figure 4. Optional Shaft-to-Valve Body Bonding Strap Assembly VALVE BODY 37A6528-A A3143-2 VIEW A-A ACTUATOR A A CAUTION For non-ENVIRO-SEAL packing: Tighten the packing follower nuts only enough to prevent shaft leakage. Excessive tightening will accelerate wear of the packing and could produce higher friction loads on the valve stem. 2. ENVIRO-SEAL Packing Systems: will not require this initial re-adjustment.
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A31D Valve Instruction Manual April 2014 D500248X012 Note Standard PTFE packing is composed of a partially conductive carbon-filled PTFE female adaptor with PTFE V-ring packing. Standard graphite packing is composed of all conductive graphite ribbon packing. Alternate shaft-to-valve body bonding is available for hazardous service areas where the standard packing is not sufficient to electrically bond the shaft to the valve (see the following step). 4.
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Instruction Manual A31D Valve D500248X012 April 2014 Packing Maintenance The A31D valve is designed so the packing can be replaced without removing the valve from the process pipeline. CAUTION For non-ENVIRO-SEAL packing: Tighten the packing follower nuts only enough to prevent shaft leakage. Excessive tightening will accelerate wear of the packing and could produce higher friction loads on the valve stem.
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A31D Valve Instruction Manual April 2014 D500248X012 CAUTION Damage to the valve disk can occur if the disk is not closed when the valve is being removed from the pipeline. If necessary, stroke the actuator to place the disk 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.
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Instruction Manual A31D Valve D500248X012 April 2014 To install a new seal, O-ring (key 6), and retaining ring gasket, follow the appropriate instructions given below. Table 5. Torque Values for Retaining Ring Screws ASME CLASS AND VALVE SIZE, NPS RETAINING RING SCREWS Fastener Nominal Size N•m CL150: NPS 3, 4, 8, and 10; NPS 3 and 4 #10 4.
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A31D Valve Instruction Manual April 2014 D500248X012 2. Install the seal ring and O-ring assembly in the valve body. The wider outside diameter of the seal ring, as marked in figure 5, goes into the T-slot area of the body. Start the edge with the wider diameter into the T-slot of the valve body using a blunt-end tool. 3. Carefully tuck the O-ring downward into the body T-slot until the seal ring is completely entrapped in the body T-slot, and it completely covers the backup O-ring. 4.
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Instruction Manual D500248X012 A31D Valve April 2014 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. 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, be sure to not damage the flange gasket sealing area of the valve body. 7.
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Instruction Manual A31D Valve D500248X012 April 2014 Figure 6.
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Instruction Manual A31D Valve D500248X012 April 2014 Anti-Blowout Protection, Packing, Valve Shaft(s), Disk, and Bearing Maintenance Removal Note NPS 3 through 8 valves (CL150) and NPS 3 through 6 valves (CL300) have a bearing stop pressed into the bearing bore immediately after the packing box. Do not attempt to remove the bearing stop which is found in the drive shaft bearing bore immediately after the packing box. The bearing stop is pressed into the bearing bore.
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A31D Valve Instruction Manual April 2014 D500248X012 Note It is not necessary to remove the retaining ring and valve seal when removing the shaft(s) and disk. 2. Properly secure the valve on a suitable worktable so it cannot slip, twist, or fall during maintenance. 3. Removing the Anti-Blowout Design: a. For PTFE or Graphite Packing: Remove the hex nuts (key 15) and pull off the packing flange (key 11). Remove the hex jam nuts (key 17) and the anti-blowout flange (key 10).
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Instruction Manual D500248X012 A31D Valve April 2014 b. 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 disk. The increasing force will draw the pin from the disk. 1. Valves with a two-piece shaft have a gasket retainer and gasket (keys 20 and 21) on the follower shaft side of the valve.
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Instruction Manual A31D Valve D500248X012 April 2014 CAUTION To avoid damage to the taper key, tangential pins, valve disk, or shaft(s) resulting from the application of excessive force, use appropriate care when driving the key or pins into the disk hub and shaft(s). Use the right tool. Do not use excessive force. 7. Be sure the taper key disk shaft joint is free of oil or grease. If necessary, remove any excess welding material from the taper key. 8.
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Instruction Manual D500248X012 A31D Valve April 2014 Key numbers in this procedure are shown in figure 9, 10, or 11 unless otherwise indicated. 1. Properly secure the valve on a suitable worktable so it cannot slip, twist, or fall during maintenance. Be prepared to support the valve disk. Allow for easy access to the valve body bore, drive shaft bearing bore and follower shaft bearing bore. WARNING Avoid personal injury or property damage caused by the impact of a falling or tipping of a large valve.
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Instruction Manual A31D Valve D500248X012 April 2014 7. Place the flat side of the disk on a flat surface and insert wooden blocks to raise the disk approximately 50.8 mm (2 inches) from the worktable surface. Then, suspend the valve body over the disk so the seal/T-slot area is facing up. Align the shaft bores through the disk with the drive shaft and follower shaft bores. Lower the valve body over the disk using caution not to dislodge or damage the thrust bearings placed on the ends of the shafts. 8.
PAGE 23
Instruction Manual A31D Valve D500248X012 April 2014 1. Replace the gasket (key 21) and gasket retainer (key 20) over the end of the follower shaft. Use a new gasket. 2. Replace the four hex head bolts (key 23) and lockwashers (key 22) 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 6 for proper torque values.
PAGE 24
Instruction Manual A31D Valve D500248X012 April 2014 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 VALVE SIZE, NPS 3 PRESSURE RATING SHAFT DIAMETER(1), mm (Inch) RETROFIT KITS PTFE PTFE CL150 14.3 (9/16) --- RRTYX000112 CL300 14.3 (9/16) --- RRTYX000112 CL150 17.
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Instruction Manual A31D Valve D500248X012 April 2014 Parts List Key Note Part numbers are shown for recommended spares only. For part numbers not shown, contact your Emerson Process Management sales office. Key 1 2 3 4 5* 6* 7* 8 9* 10 11 12 13* Description Part Number Valve Body If you need a valve body as a replacement part, order the valve size, ASME rating and desired material. Contact your Emerson Process Management sales office.
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Instruction Manual A31D Valve D500248X012 April 2014 Key 27 28 29 30 31 33 34 35 Description 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 Disk/Shaft/Pin Assembly (not shown) Part Number V124867X012 ENVIRO-SEAL Packing System (See figure 8) 10 17 100 101 102 103 105* 26 Anti-Blow Flange Hex Jam Nut (4 req'd) Packing Flange Stud (4 req'd) Packing
PAGE 27
Instruction Manual A31D Valve D500248X012 April 2014 Figure 8. ENVIRO-SEAL Packing Systems 14B0095-A STACKING ORDER OF PTFE PACKING RINGS 34B7524-B PTFE PACKING SYSTEM 14B0086-A 34B7524-B STACKING ORDER OF GRAPHITE PACKING RINGS GRAPHITE PACKING SYSTEM NOTE: 1 VALVES WITH SHAFTS LARGER THAN 38.
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Instruction Manual A31D Valve D500248X012 April 2014 Key 5* Seal Ring VALVE SIZE, NPS SOFT SEAL PTFE PHOENIX III SEAL UHWMPE S31600/PTFE CL150 NOVEX S31600 3 V143521X012 V143521X022 V143525X012 V158982X042 4 V143539X012 V143539X022 V143490X012 V158984X042 6 V143443X012 V143443X022 V143456X012 V158987X042 8 V143645X012 V143645X022 V143648X012 V158992X022 10 V149969X012 V149969X022 V150256X012 V158989X032 12 V149970X012 V149970X022 V150022X012 V158991X012 14 V168932X01
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Instruction Manual A31D Valve D500248X012 April 2014 Key 6* Backup RIng VALVE SIZE, NPS FKM NITRILE EPR CHLOROPRENE Soft Seal PTFE / UHMWPE CL150 3 V143826X012 V143826X022 V143826X032 V143826X042 4 V110183X012 V110183X022 V110183X032 V110183X042 6 V110190X022 V110190X012 V110190X032 V110190X042 8 V110195X012 V110195X022 V110195X032 V110195X042 10 V110199X012 V110199X022 V110199X032 V110199X042 12 V110203X012 V110203X022 V110203X032 V110203X042 14 V111360X012 V111360X
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Instruction Manual A31D Valve D500248X012 April 2014 Key 7* Bearing VALVE SIZE, NPS QUANTITY NEEDED PEEK 316 / NITRIDE CL150 3 2 V166262X012 V166484X012 4 2 V166300X012 V166485X012 6 2 V166284X012 V166462X012 8 2 V166285X012 V167379X012 10 6 V166266X012 V167380X012 12 4 V166267X012 V166460X012 14 3(1) 2(2) 7(3) ----V157057X012 V161474X022 V111398X032 --- 16 4(3) V157058X012 V161472X022 18 4(3) V157059X012 V131700X022 20 4(3) V157060X012 V169414X012 24 4(3) V
PAGE 31
Instruction Manual A31D Valve D500248X012 April 2014 Key 21* Gasket SOFT SEAL VALVE SIZE, NPS METAL / PHOENIX III Standard and NACE Standard CL150 3 16B0782X022 16B0782X012 4 V165568X022 V165568X012 6 V165568X022 V165568X012 8 V165568X022 V165568X012 10 V124605X022 V124605X012 12 V165568X022 V165568X012 14 V125000X022 V125000X012 16 V125001X012 V125001X012 18 V125002X022 V125002X012 20 V124604X022 V124604X022 24 V124603X022 V124603X012 CL300 3 16B0782X022 16B0782X
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Instruction Manual A31D Valve D500248X012 April 2014 Figure 9.
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Instruction Manual A31D Valve D500248X012 April 2014 Figure 10.
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Instruction Manual A31D Valve D500248X012 April 2014 Figure 11.
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Instruction Manual D500248X012 A31D Valve April 2014 35
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A31D Valve April 2014 Instruction Manual D500248X012 Neither Emerson, Emerson Process Management, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user. Fisher, POSI-SEAL, and ENVIRO-SEAL are marks owned by one of the companies in the Emerson Process Management business unit of Emerson Electric Co.