High Performance Butterfly Valves
Fisher® High Performance Butterfly Valves feature an eccentrically mounted disc and are known for their wide application range and shutoff capability. They are available for a variety of control and isolation service from cryogenic to high temp and pressure classes to ASME CL2500 and sizes from NPS 2 to 72.
POSI-SEAL® High Performance Butterfly Valves are designed for isolation on/off service as well as low tier control. The POSI-SEAL valves feature keyed, double D or square valve shafts. The POSI-SEAL valves are available in sizes NPS 2 to 72, pressure classes up to CL2500. Shutoff is provided by a variety of seals which include metal, PTFE and fire-tested and cryogenic.
 | Fisher 8510 is a flangeless valve, with a splined shaft for throttling control. |
| Fisher 8510B is a multi-class rated flangeless valve for throttling control. |
 | Fisher 8532 is a high-performance butterfly valve with a splined shaft for throttling control. |
 | Fisher 8560 is a high-performance butterfly valve with a splined shaft for throttling control. |
 | Fisher 8580 rotary valve offers excellent throttling performance. An approximately linear flow characteristic provides precise throttling control. |
 | Control-Disk rotary valve offers excellent throttling performance. |
 | POSI-SEAL A11 is a high-performance butterfly valve featuring a keyed or square-end shaft for various on-off applications. |
 | POSI-SEAL A31A is a high-performance butterfly valve featuring a keyed shaft for on-off service. |
 | POSI-SEAL A41 is a high-performance butterfly featuring a double D shaft for on-off service. |
 | POSI-SEAL A81 rotary valve with FieldQ rack-and-pinion actuator offers automated on-off, quarter-turn performance. |
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