relief valve

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Noun1.Relief valve - a valve in a container in which pressure can build up (as a steam boiler)relief valve - a valve in a container in which pressure can build up (as a steam boiler); it opens automatically when the pressure reaches a dangerous level
regulator - any of various controls or devices for regulating or controlling fluid flow, pressure, temperature, etc.
valve - control consisting of a mechanical device for controlling the flow of a fluid
References in periodicals archive ?
The workshop is also an authorised service centre for Colfax pumps, BRDR Christensen plug valves, Faris safety relief valves and Groth pressure and vacuum relief valves.
Tenders are invited for Supply Of Thermal Relief Valve And Spring Loaded Surge Relief Valves For Gspl Stations Bongaigaon And Siliguri
The services offered by Bitco include general valve services and maintenance (control valves, mechanical valves, safety relief valves), spare stock of valves from the OEMs, 5-tonne overhead crane, OEM QA/QC procedures; ASME/UV, ISO 9001, assembly, repair and maintenance of control valves and mechanical valves up to 24 inches, assembly, repair, testing and assembly of safety relief valves, painting and shot blasting, machine shop, qualified technicians, maintenance of electro hydraulic actuators, reciprocating compressor valves refurbishment and calibration of pressure and temperature instruments.
LV4404C2H42 is a low pressure line regulator which has integrated relief valves set at 3 psig with an inlet pressure up to 250 psi.
WANNER INTERNATIONAL offers a wide selection of Back Pressure Valves and Pressure Relief Valves which it claims are ideal for use in chemical dosing systems and complement its Hydra-Cell diaphragm pumps.
ClickPress, Fri Jul 11 2014] Pressure relief valves are the valves that release pressure from the pressurized vessel when the force exerted onto the disc is greater than the process inlet force.
Every Fast Centre carries a large local inventory of new pressure relief valves and spare parts, backed by a web-based global inventory.
It produces tank and terminal safety equipment, like hatches, vent, pressure and vacuum relief valves and flame arrestors.
Swagelok RHPS series PRV model proportional relief valves provide proportional venting of overpressures for piping systems up to 1 in.
Taylor Valve has introduced EPCs (Environmental Protection Caps) for pressure relief valves with the slogan, "It squeaks when it leaks.
The Quick Ship Program addresses Dresser Masoneilan's most-requested product lines, including: *A CamflexA[R] 35002 Series Eccentric Plug Rotary Valve *A 21000 Series Reciprocating Globe Valves *A 41005 Series Heavy Duty, Cage Guided Globe Valves *A VaripakA[R] 28000 Series Micro Flow Control Valves *A 535H/536H Series High Capacity Pneumatic Regulators *A 12400 and 12800 Series Digital and Pneumatic Level Transmitters *A 1900 Safety Relief Valves *A 19000 Safety Relief Valves Complete control valves and digital instrumentation will be shipped at shortened lead times, from Dresser Masoneilan's manufacturing operations and rapid response centers.
Question 3: Are two relief valves (automatic and manual, may be two manual relief valves) required?