EMERSON
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Fisher™ 8540 High Performance Butterfly Valve

The Fisher 8540 valve features an eccentrically mounted disk with a soft seal ring. Soft seals provide excellent sealing capabilities in both flow directions. The square shaft combines with a variety of actuators to form a reliable, high-performance valve suitable for many applications requiring tight shutoff

Key Features

  • Exceptional Shutoff — Bidirectional soft seal ring 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.
  • Easy Installation — The valve body self-centers on the line flange bolts as a fast, accurate means of centering the valve in the pipeline.
  • Approximately Linear Flow Characteristic — An approximately linear flow characteristic provides precise throttling control.
  • Powder Paint as Standard — The Emerson powder paint finish offers a corrosion-resistant finish to all steel parts.
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