The Fisher 8560 butterfly valve is a reliable, high-performance control valve suitable for throttling applications requiring extremely low leakage rates
- The eccentrically-mounted disk design provides an approximate linear flow characteristic and can be used for throttling or on/off control applications through 90 degrees of disk rotation.
- Trim and bolting materials are available for applications involving sour service. These constructions comply with the recommendations of NACE MR0175-2002.
- The optional ENVIRO-SEAL™ packing system is designed with improved sealing, guiding, and loading force transmission. The ENVIRO-SEAL packing system can control emissions to below the Environmental Protection Agency limit of 100 ppm for valves.
- Standard valve construction includes conductive packing to provide electrical bonding for hazardous area applications.