relief valves

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• Relief valve — The relief valve is a type of valve used to control or limit the pressure in a system or vessel which can build up by a process upset, instrument or equipment failure, or fire. The pressure is relieved by allowing the pressurised fluid to flow… …   Wikipedia

• Pilot-operated relief valve — A Pilot Operated Relief Valve is used to relieve large flows with small pressure differential. [cite web|title=Pressure control valves part 1|url=http://www.hydraulicspneumatics.com/200/FPE/Valves/Article/True/6411/Valves 070111… …   Wikipedia

• Pressure relief valve — A pressure relief valve is a safety device that relieve in case of overpressure in vessel or piping. The generic term is or pressure relief Valve (PRV) or pressure safety valve (PSV).Main types of pressure relief valves include: *Relief valve… …   Wikipedia

• Safety valve — A safety valve is a valve mechanism for the automatic release of a gas from a boiler, pressure vessel, or other system when the pressure or temperature exceeds preset limits. It is part of a bigger set named pressure safety valves (PSV) or… …   Wikipedia

• Valve — This article is about the flow control device. For the game developer, see Valve Corporation. For the electronic component, see Vacuum tube. For other uses, see Valve (disambiguation). These water valves are operated by handles. A valve is a… …   Wikipedia

• Diving regulator — and Octopus Other names Demand valve Uses Reduces pressurized breathing gas to ambient pressure and delivers it to the diver Inventor Manuel Théodore Guillaumet (1838), Benoît Rouquayrol (1860) …   Wikipedia

• Marotta — Controls Incorporated Type Private Industry Aerospace Defense Space Systems Industrial Fluids Founded 1943, Montville, New Jersey …   Wikipedia

• Gas holder — A gasometer, or gas holder, is a large container where natural gas or town gas is stored near atmospheric pressure at ambient temperatures. The volume of the container follows the quantity of stored gas, with pressure coming from the weight of a… …   Wikipedia

• National Board of Boiler and Pressure Vessel Inspectors — The National Board of Boiler and Pressure Vessel Inspectors is composed of chief boiler and pressure vessel inspectors representing states, cities, and provinces enforcing pressure equipment laws and regulations. Created to prevent death, injury… …   Wikipedia

• Formosa Plastics propylene explosion — The Formosa Plastics Propylene Explosion was a propylene release and explosion that occurred on October 6 2005, in the Olefins II Unit at the Formosa Plastics plant in Point Comfort, Texas, USA. The subsequent fire burned for five days.Formosa… …   Wikipedia

• Dry suit — A dry suit or drysuit provides thermal insulation or passive thermal protection to the wearer while immersed in water,[1][2][3][4] and is worn by divers, boaters, water sports enthusiasts, and others who work or play in or near cold water. A dry… …   Wikipedia