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2. Relief valve - Wikipedia

   en.wikipedia.org/wiki/Relief_valve

   A relief valve DN25 on cooling water pipe from heat exchanger Schematic diagram of a conventional spring-loaded pressure relief valve. A relief valve or pressure relief valve (PRV) is a type of safety valve used to control or limit the pressure in a system; excessive pressure might otherwise build up and create a process upset, instrument or equipment failure, explosion, or fire.

3. Pilot-operated relief valve - Wikipedia

   en.wikipedia.org/wiki/Pilot-operated_relief_valve

   At set pressure the valve snaps to full lift. This can be quite violent on large pipes with significant pressure. The pressure has to drop below the set pressure in order for the piston to reseat (see blowdown in relief valve article). Modulating The pilot is designed to open gradually, so that less of the system fluid is lost during each ...

4. List of valves - Wikipedia

   en.wikipedia.org/wiki/List_of_valves

   Rupture disc: a one-time-use replaceable valve for rapid pressure relief, used to protect piping systems from excessive pressure or vacuum; more reliable than a safety valve; Saddle valve: where allowed, is used to tap a pipe for a low-flow need; Schrader valve: holds the air inside automobile tires

5. Safety valve - Wikipedia

   en.wikipedia.org/wiki/Safety_valve

   An oxygen safety relief valve DN250-safety valves. A safety valve is a valve that acts as a fail-safe.An example of safety valve is a pressure relief valve (PRV), which automatically releases a substance from a boiler, pressure vessel, or other system, when the pressure or temperature exceeds preset limits.

6. Global Pressure Relief Valves Market to Reach $7 billion ...

   lite.aol.com/tech/story/0022/20241014/9255690.htm

   Wilmington, Delaware, Oct. 14, 2024 (GLOBE NEWSWIRE) -- Allied Market Research published a report, titled, “Pressure Relief valves Market Size, Share, Competitive Landscape and Trend Analysis Report, by Valve Type (Spring Loaded, Pilot Operated, Dead Weight, and P and T Actuated), By Pressure (Low, High, and Medium), End User (Oil and Gas, Chemical, Power Generation, Food and Beverage ...

7. Reduced pressure zone device - Wikipedia

   en.wikipedia.org/wiki/Reduced_pressure_zone_device

   A reduced pressure zone device (RPZD, RPZ, or RPZ valve) is a type of backflow prevention device used to protect water supplies from contamination. RPZDs may also be known as reduced pressure principle (RP), reduced pressure principle backflow prevention devices, [1] [2] reduced pressure zone assemblies (RPZA), [3] or reduced pressure principle ...