Emerson A31A Instruction Manual

www.Fisher.comD500194X012Type A31A High Performance Butterfly Valve(NPS 14 through 24)ContentsIntroduction 1...Scope of Ma

A31A ValveInstruction ManualForm 5291March 200810Figure 6. Optional Shaft-to-Valve Body Bonding Strap AssemblyVALVE BODYACTUATORAAVIEW A-A37A6528-AA31

A31A ValveInstruction ManualForm 5291March 200811Usually, packing leakage can be eliminated bymerely tightening the hex nuts (key 15) locatedabove the

A31A ValveInstruction ManualForm 5291March 200812Figure 7. Anti-Blowout Design DetailsC0758-1/ILCUTAWAY, INTERNAL DETAILSWARNINGAvoid personal injury

A31A ValveInstruction ManualForm 5291March 200813Table 6. Torque Values for FastenersFASTENER NOMINALSIZERETAINING RING SCREWS GASKET RETAINING BOLTSN

A31A ValveInstruction ManualForm 5291March 2008146. Manually rotate the upper shaft clockwise 180degrees to return the disc (key 2) to its closedposi

A31A ValveInstruction ManualForm 5291March 200815This adjustment is necessary to be certain that theactuator output torque is fully absorbed by theact

A31A ValveInstruction ManualForm 5291March 200816follower (key 102), jam nuts (key 17),anti-blowout flange (key 10), and the spring packassembly (key

A31A ValveInstruction ManualForm 5291March 200817WARNINGAvoid personal injury or propertydamage caused by the impact of afalling or tipping of a large

A31A ValveInstruction ManualForm 5291March 200818excessive force, use appropriate carewhen driving the pins into the disc huband shaft(s). Use the rig

A31A ValveInstruction ManualForm 5291March 200819Repair KitsPTFE Repair kits include a single PTFE packing setand anti-extrusion washers. Graphite pac

A31A ValveInstruction ManualForm 5291March 20082Table 1. SpecificationsValve Size and End Connection StylesNPS J 14, J 16, J 18, J 20, and J 24 valves

A31A ValveInstruction ManualForm 5291March 200820Key Description Part Number26* Retaining Ring Gasket, Oxygen Service,CL150 (continued)NPS 20 V169962X

A31A ValveInstruction ManualForm 5291March 200821Figure 9. Type A31A Wafer Style Valve AssemblyB2388-1/ILNPS 14 THROUGH 24CL150 AND 300NPS 14 CL150NPS

A31A ValveInstruction ManualForm 5291March 200822Key 6* Backup RIngVALVE SIZE, NPS FKM NITRILE EPR CHLOROPRENE PTFE(1)Soft Seal PTFE / UHMWPECL15014 V

A31A ValveInstruction ManualForm 5291March 200823Figure 10. ENVIRO-SEALr Packing Systems PTFE PACKING SYSTEM34B7524-BSTACKING ORDER OFPTFE PACKING RIN

A31A ValveInstruction ManualForm 5291March 200824Key 21* GasketVALVE SIZE, NPSSOFT SEAL METAL / PHOENIX III SOFT SEAL & METAL / PHOENIX IIIStandar

A31A ValveInstruction ManualForm 5291March 20083Figure 2. Maximum Pressure/Temperature RatingsB23352/ILTEMPERATURE LIMITATIONS DO NOT ACCOUNT FOR THE

A31A ValveInstruction ManualForm 5291March 20084Table 2. Material Temperature RatingsCOMPONENT AND MATERIAL OF CONSTRUCTION(1)TEMPERATURE RANGE_C _FVa

A31A ValveInstruction ManualForm 5291March 20085the limits given in this manual or onthe nameplates.D Use pressure-relieving devices asrequired by gov

A31A ValveInstruction ManualForm 5291March 20086Table 3. Valve Body Data, CL150VALVE SIZE,NPSSHAFT DIA. ATYOKE BEARINGFACE-TO-FACEDIMENSION(1)MINIMUMI

A31A ValveInstruction ManualForm 5291March 20087Table 4. Valve Body Data, Wafer-Style Valves, CL300VALVE SIZE, NPSSHAFT DIA. ATYOKE BEARINGFACE-TO-FAC

A31A ValveInstruction ManualForm 5291March 20088Figure 4. Proper Installation StepsB2263-1/ILA5557/ILFigure 5. Properly Installed Wafer-Style ValveAdj

A31A ValveInstruction ManualForm 5291March 20089D For Single-Flange Valves: Position the valvebetween the flanges. Be sure to leave enough roomfor the