Fisher A31A Cryogenic High Performance Butterfly Valve

Fisher A31A Cryogenic High Performance Butterfly Valve

The Fisher™ A31A cryogenic high performance butterfly valve is designed for extreme temperature, cryogenic services and features a valve body extension which positions the packing system and the actuator away from the extreme temperatures. The valve also features a metal NOVEX seal providing tight shutoff, low operating torques, and the rugged durability needed for cryogenic service.

Any questions?

Laila Myrhdal Madsen
Inside Sales Engineer
Phone. 2112 3345

Laila.Madsen@askalon.dk

Morten Noppenau
Area Account Manager East
Mob. 2121 3491

Morten.Noppenau@askalon.dk

Peder Hvidberg
Area Account Manager West
Phone. 2178 5053

Peder.Hvidberg@askalon.dk

Certifications PED, CRN, Fugitive Emission
Critical Service General Service
Flow Characteristics Linear
Material Carbon Steel, Stainless, Alloy
Operating Temperature Cryogenic, Standard Temperature, High Temperature
Power Source Electric, Hydraulic, Pneumatic, Lever, Gear, Electro-Hydraulic
Pressure Class ASME
Process Connection Type Flanged, Single Flanged, Double Flanged, Lugged, Wafer
Seat / Seal Type Metal, Soft
Shutoff Class Class VI (FCI 70-2)
Standards B16.34
Stem Live Loaded, Adjustable Packing
Valve Size NPS 3, NPS 4, NPS 6, NPS 8, NPS 10, NPS 12, NPS 14, NPS 16, NPS 18, NPS 20, NPS 24
Valve Size Standard NPS
  • Developed as a valve/actuator packing with a double D drive shaft to allow easy, direct mounting to a rack and pinion actuator, eliminating the need for external coupling systems.
  • Concentric rotation ensures that the valve disk remains in the closed position, even in the event of line pressure surges or actuator failure.
  • The torque necessary to open and close the valve is the same, regardless of the direction in which the differential pressure is applied.
  • Interchangeability of all parts, including shafts and disks, simplifies service and reduces maintenance costs.
  • Seal retainer screws are located so there is no interference with the sealing function of either flat sheet or spiral-wound line flange gaskets.
  • The valve body self-centers on the line flange bolts as a fast, accurate means of centering the valve in the pipeline.

Questions about the product?

Fill out the form below and we vill contact you with answers to your qusestions