Fisher 289

The Fisher 289 Series relief valves are spring-loaded throttling relief valves used as downstream pressure regulators to protect the system from overpressure. 

A smooth throttling action minimizes pressure surges in the system during relief operation. The 289 Series relief valves are ideal for low-pressure settings due to the increased sensitivity provided by a large diaphragm area.

This series is designed for pressure control, they are not ASME safety relief valves.

Features:

  • Throttling type relief
  • High flow rates
  • Small size
  • Reliability due to simplicity
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