Fisher™ H120 Series Relief Valves

The automatic spring-loaded relief valves are designed to keep line pressure below preset values. They are mounted downstream of regulators and perform the specific function of releasing small amounts of gas in the event of the regulator not closing properly. V Series is in conformity with the Pressure Equipment Directive PED 97/23/EC and is classified in Max. Category I

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. The main valves in both constructions use quick-change trim package for fast maintenance.

Type 630R is a general relief valve available in NPS 1 & 2 / DN 25 & 50 body sizes for compressor stations, refineries and similar plants requiring backpressure gas regulation settings up to 250psi/7,2bar. Available in high & low pressure constructions. Low pressure units have larger diaphragm areas to provide accurate control in low pressure settings.

Fisher Types 1808 globe-style and 1808A angle-style pilot-operated backpressure regulators or relief valves 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.