Fisher A41 High-Performance Butterfly Valve

Manufacturer: Fisher

The Fisher A41 valve (figure 1) features an eccentrically mounted disc with a soft or stainless steel seal ring. Soft seals provide excellent sealing capabilities in both flow directions. The metal seal ring provides excellent shutoff against pressure applied in the recommended flow direction for both liquid and gas applications. The NOVEX and Phoenix III metal seals are available for demanding applications requiring excellent shutoff capabilities. The double D shaft combines with a variety of power and manual actuators to form a reliable, high-performance valve suitable for many power applications requiring tight shutoff.

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Features Model

Exceptional Shutoff-Bidirectional soft seal ring (see figure 3) with pressure-assisting action results in exceptional shutoff rates as shown in the specifications.
Shaft Retention-Redundant shaft retention provides added protection. The packing follower and shaft step interact to hold the shaft securely in the valve body (see figure 2).
Easy Installation-The valve body self-centers on the line flange bolts as a fast, accurate means of centering the valve in the pipeline.
Sour Service Capability-Materials are available for applications handling sour fluids and gases. These materials comply with the requirements of NACE MR0175-2002.
W9269 Figure 1. Fisher A41 Valve
Improved Environmental Capabilities-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 EPA
(Environmental Protection Agency) limit of 100 ppm (parts per million) for valves.
Low Cost Maintenance-Individual disc/shaft components can be replaced after disassembly due to sleeve and taper pin connections.

Mfr. Part No.	Description

Fisher A41 High-Performance Butterfly Valve

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