Relief valve definition

Relief valve means a valve used only to release an unplanned, nonroutine discharge. A relief valve discharge results from an operator error, a malfunction such as a power failure or equipment failure, or other unexpected cause that requires immediate venting of gas from process equipment in order to avoid safety hazards or equipment damage.

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Relief valve means an automatic pressure-relieving device actuated by a static pressure upstream of the valve that opens further with the increase in pressure over the opening pressure and that is used primarily for liquid service.

Relief valve means an automatic pressure-relieving device actuated by static pressure upstream of the valve which opens farther with an increase in pressure over the opening pressure. It is used primarily for liquid service.

Examples of Relief valve in a sentence

Relief valve indicator lights shall be provided and mounted on the panel adjacent to the pilot valve assembly.
Relief valve control (pilot valve) shall be protected from malfunction due to sand or other sediment in the water by a strainer which can be removed, cleaned and replaced from the operator's panel while the pump is operating.
Relief valve and start-up valve vents are provided with silencers to meet the noise limit of 85 dBA.
The STAR to State of Texas Agriculture Relief valve was created solely with monetary donations from private individuals and entities to set disaster recovery.
Landlord shall provide Tenant an upfit allowance of ------------------- Forty One Thousand Two Hundred Thirty & no/100 Dollars ($41,230.00) , or Ten Dollars per square foot, for the renovation of the expansion space.

More Definitions of Relief valve

Relief valve means an automatic pressure relief valve that is actuated by static pressure upstream of the valve that opens further with the increase in pressure over the opening pressure;

Relief valve means an automatic pressure relieving device actuated by the static pressure upstream of the valve which opens further with the increase in pressure over the opening pres- sure.

Relief valve means a pressure relief valve actuated by inlet static pressure having a gradual lift generally proportional to the increase in pressure over opening pressure. It may be provided with an enclosed spring housing suitable for closed discharge system application and is primarily used for liquid service.

Relief valve means an ASME-stamped automatic pres- sure relieving device designed for liquid service which is actuated by the pressure upstream of the valve and opens further with an increase in pressure above the stamped pressure.

Relief valve means a pressure−actuated valve which is normally held closed by a spring or other means and which is designed to automatically open enough when needed to prevent internal pressure from exceeding a predetermined level.

Relief valve means an automatic pressure-relieving device as described in section I, IV or VIII of the [code.] ASME Boiler and Pressure Vessel Code, adopted by reference pursuant to NAC 618.148.

Relief valve means each pressure relief device including pressure relief valves, rupture disks, and other pressure relief systems used to protect process components from overpressure conditions. "Relief valve" does not include polymerization shortstop systems, refrigerated water systems, or control valves or other devices used to control flow to an incinerator or other air pollution control device.