Back Pressure Regulators / Relief Valves

Back pressure regulators are designed to provide steady state control of inlet or upstream pressure. Relief valves offer reliable on/off pressure protection upon demand in systems, vacuum regulation and air or gas recirculation systems.

P289

P289 Back Pressure RegulatorThe P289 back pressure regulator functions as a high flow relief valve with an adjustable set point. The P289 can be used in place of a standard relief valve to provide protection against over pressurization in the downstream system. With its large diaphragm area and integral pitot tube booster, the P289 is designed for quick and smooth response to excessive pressure relief requirements, particularly within low-pressure settings.

P800

P800 Relief ValveThe BelGAS P800 is a direct operating, in-line, factory preset relief valve for use in pneumatic applications that warrant protection from over pressurization. The P800 is used primarily between a pneumatic instrument and a supply regulator to limit the instrument supply pressure to 50 PSIG in the case of a supply regulator failure..

P630R

P630R Relief ValveThe BelGAS P630R is a spring loaded, adjustable relief valve designed for relief pressure settings from 3 PSIG to 250 PSIG (0.21 to 17.3 BAR). The unit’s heavy duty construction incorporates the use of stainless steel internal components, along with a powder-coated epoxy exterior finish, making it ideally suited for the oil and gas industries. All units meet NACE MR0175 material requirements for corrosive (sour gas) environments