Type 8532 High-Performance Butterfly Valve
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The Type 8532 valve is available as either a flangeless, wafer-style design or as a single-flange (lugged) design.
A splined drive shaft combines with a variety of spring-and-diaphragm or pneumatic piston diaphragm actuators to make the Type 8532 a reliable, high-performance butterfly valve for a variety of throttling and on-off applications in the various process industries.
The Type 8532 valve can be supplied with one of several dynamic seals that can be used in a variety of demanding applications. With the appropriate seal selection and materials of construction, the pressure-assisted seal provides
excellent shutoff against the full ANSI Class 150 or 300 pressure ratings.
- Economical Tight Shutoff — The pressure-assisted seal design provides tight shutoff against the full pressure rating of the specified valve.
- Safety — Shaft blowout protection is designed into the Type 8532 valve. The anti-blowout gland fits securely over the valve shaft which has been turned down to form a circumferential shoulder that contacts the anti-blowout gland.
- Excellent Flow Control — With a modified equal percentage flow characteristic, the Type 8532 can be used for throttling applications through 90 degrees of disk rotation. Rangeability is 100 to 1.
- Economically Designed for Minimal Deadband — A splined end connection on the drive shaft allows lever clamping by most Fisher rotary actuators.
- Application Versatility — Standard construction materials and seal assemblies provide longer life and outstanding performance in a broad range of liquid and gas applications.
- Ease of Maintenance — Interchangeability of all parts including shafts and disks simplifies service and reduces maintenance costs.