Fisher A31A Cryogenic High Performance Butterfly Valve
Manufacturer: Fisher — POSI-SEAL
Part number: A31A
Category: Valves
Cryogenic high-performance butterfly valve with double-D drive shaft for direct rack-and-pinion actuator mounting. Concentric rotation.
Description
The Fisher A31A cryogenic high performance butterfly valve is developed as a valve/actuator package 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. 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. The valve body self-centers on the line flange bolts.
Applications
- Cryogenic service
- LNG processing
- low-temperature process control
- throttling and on-off control
Industries
- Oil & Gas
- LNG
- Chemical
- Power Generation
- Cryogenic Processing
Available on request — pricing is quoted per enquiry. Request a quotation.