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> Relief / Backpressure Devices

1805 Series Relief Valves
Fisher 1805 Series relief valves are designed for use in farm tap applications where a relief valve is needed between the first-stage and second-stage regulators.

Type 1805P Pilot-Operated Relief Valve
Fisher Type 1805P-6358 relief valve is an accurate, low-cost, pilot-operated relief valve consisting of a Type 1805P main valve and a Type 6358 pilot.



1808 Series Relief Valve or Backpressure Regulators
Fisher Type 1808 and 1808A are economical, compact devices used in gas or liquid service to maintain pressure on oil and gas separators, and in pressure relief applications in gas distribution systems.
289 Series Relief Valves / Backpressure Regulators
Fisher 289 Series relief valves are spring-loaded throttling relief valves used as downstream pressure regulators to protect the system from overpressure.
Type 289P Relief Valve or Backpressure Regulator
Fisher Type 289P pilot-operated relief valve provides protection from overpressuring a downstream system. This relief valve is suitable for service on natural gas, air, propane, or any other operating medium not corrosive to the internal parts.

Type 63EG Relief Valve or Backpressure Regulator
Fisher Type 63EG pilot-operated pressure relief valves may be used for both liquid and gas service. Type 63EG is also suitable for throttling backpressure or bypass applications.

Type EZR Relief Valve or Backpressure Regulator
Fisher Type EZR pilot-operated, pressure relief valve or backpressure regulator is typically used in city gate and district stations as a relief valve for overpressure protection, or in commercial and industrial applications as a backpressure regulator.

H120 Series Relief Valves
Fisher Type H120 self-operated relief valve has a preset and pinned spring retainer. Type H120 may be used where venting to the atmosphere is acceptable and where some pressure-relieving tolerance is acceptable.

H200 Series Relief Valves
Fisher H200 Series Pop relief valves are direct-operated relief valves with preset and pinned spring retainers.

 

 

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