relief valve


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relief valve

[ri′lēf ‚valv]
(mechanical engineering)

relief valve

relief valves
A valve installed in a system to relieve pressure in excess of a preset limit by discharging a portion of the contents of the system.

relief valve

relief valve
A typical oil pressure relief valve.
A pressure-control valve in any fluid system, which limits the pressure in the system by releasing it at a preset value. The pressure is not allowed to be built up above this preset figure.
References in periodicals archive ?
The model can be used to analyze the overflow dynamic characteristics of the conical relief valve.
When the relief valve is used in deep-sea equipment, the pressure difference of the valve between the input and the output is the same as that in land.
Section [section]9.4.9 of Standard 15-2007 requires that the materials of construction used in the relief valve be compatible and robust such that the valve's set pressure does not change by more than 5% over a five-year span.
There should not have been a sufficient quantity of propane in the -system to cause a 250 pounds per square inch (psi) vapor relief valve to open.
The pressure switches provide an electrical indication that a rupture disc has burst and that a relief valve has discharged.
VAC-U-MOLE MCL-T/500D FAST FACTS Power source: 30 hp Kubota diesel engine, water cooled with 12v electric start Vacuum system: 300 cfm vacuum pump with vacuum relief valve, 3 or 4-inch lines Spoil tank: 500 gallon, full open door with quick lock, dual hydraulic lifting system, automa clean-out system Filtration: Heavy duty five micron industrial air filter with in-tank baffles High pressure 3,000 psi, 4 gpm flow, built in pressure water system: relief with strainer, electronic sensor prevent spump damage
MRRSE Research in its recent study on the Pressure Relief Valves Market, offers a detailed value-volume analysis of the pressure relief valves market on the basis of various segments such as product type, set pressure, end use, and region.
The drain cock For the HIMARS' hydraulic relief valve has a problem: it points straight out.
International oilfield services company Expro has announced the introduction of a new Power Relief Valve (PRV) system which reduces the man-hours and rig downtime historically associated with operating and maintaining traditional mud pump relief valves and systems.
In load-sensing valve control systems, sensed pressure is used to adjust the setting of a control signal to adjust the relief valve setting, but it would be possible to apply the technique to flow control, as is done in pressure-compensated directional control valves (Fig.
Testing of the relief valve on the steam kettles is not a common discrepancy.
passages will pass a maximum of only 5 to 8 gpm, positive-displacement pumps will lift the relief valve, causing most of the flow to recirculate back to the pump suction.