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Fisher-Rosemount Posi-Seal A31, Instruction Manual

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Fisher-Rosemount Posi-Seal A31 Instruction Manual Download Page 20

Type A31A

20

For information, contact Fisher Controls:
Marshalltown, Iowa 50158 USA
Cernay 68700 France 
Sao Paulo 05424 Brazil
Singapore 128461

                                                         

                                                       

Printed in U.S.A.

E

Fisher Controls International, Inc. 1998; All Rights Reserved

Posi-Seal, Phoenix III, ENVIRO-SEAL, NOVEX, Fisher, Fisher-Rosemount, and Managing The Process Better are marks owned by Fisher Controls International, Inc. or Fisher-Rose-
mount Systems, Inc. All other marks are the property of their respective owners.

Summary of Contents for Posi-Seal A31

Page 1: ...duction Scope of Manual This instruction manual provides installation mainte nance and parts ordering information for the POSI SEAL Type A31A high performance butterfly Figure 1 Typical Type A31A Valv...

Page 2: ...nly Phoenix III Seal Bidirectional bubble tight shutoff Phoenix III Seal for Fire Tested Applications Consult your Fisher Controls sales office or repre sentative for fire tested performance Cryogenic...

Page 3: ...valve without first contacting your Fisher Controls sales office or sales representative The maximum allowable inlet pressures for Type A31A valves are consistent with the applicable pressure temperat...

Page 4: ...about proper valve orientation in a specific application contact your Fisher Controls representative or sales office Table 4 Valve Body Data Class 300 VALVE SIZE INCHES SHAFT DIA AT YOKE BEARING FACE...

Page 5: ...Type A31A 5 B2335 2 IL Figure 2 Maximum Pressure Temperature Ratings...

Page 6: ...Type A31A 6 Figure 2 Maximum Pressure Temperature Ratings continued B2336 1 IL...

Page 7: ...able 5 for the quantity and size of flange bolts required Installing Wafer Style Valves WARNING The edges of a rotating valve disk have a shearing effect that may result in per sonal injury To avoid p...

Page 8: ...ed of all conduc tive packing rings graphite ribbon packing to electrically bond the shaft to the valve for hazardous area service or non conductive PTFE packing rings For oxygen service applications...

Page 9: ...ement parts manufactured or furnished by Fisher Controls WARNING Avoid personal injury from sudden re lease of process pressure Before per forming any maintenance operations D Disconnect any operating...

Page 10: ...ystem Normally the packing nuts should not require re tight ening However when servicing an ENVIRO SEAL packing system if the springs do not remain nearly flat retighten the packing box nuts until the...

Page 11: ...he 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 disk thoroughl...

Page 12: ...t while punching one initial screw hole through the gasket for alignment 5 Install the retaining ring and align the screw holes in the retaining ring with the holes in the valve body Install the first...

Page 13: ...tall 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...

Page 14: ...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 in ternal valve parts Never use a wrench or pliers on the...

Page 15: ...he disk pin key 26 in the follower shaft key 4 a If a maintenance kit is available use the pin ex tractor to remove the disk pins Select the correct size pin extractor tip with screws of proper thread...

Page 16: ...tion 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 o...

Page 17: ...amage to the taper key tan gential pins disk 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...

Page 18: ...sembled at the factory the valve serial number is stamped on the nameplate at tached to the actuator Parts Reference Key Description 1 VALVE BODY 2 DISK 3 DRIVE SHAFT 4 FOLLOWER SHAFT 5 SEAL RING 6 BA...

Page 19: ...Type A31A 19 Figure 8 Type A31A 3 through 12 inch Typical Assembly A5947 IL 27291 27301 C0821 IL WAFER STYLE SHOWN...

Page 20: ...ore 128461 Printed in U S A EFisher Controls International Inc 1998 All Rights Reserved Posi Seal Phoenix III ENVIRO SEAL NOVEX Fisher Fisher Rosemount and Managing The Process Better are marks owned...

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