pressure-vent valve

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• Pressure cooking — is a method of cooking in a sealed vessel that does not permit air or liquids to escape below a preset pressure. Because the boiling point of water increases as the pressure increases, the pressure built up inside the cooker allows the liquid in… …   Wikipedia

• Vent (submarine) — A vent is a valve fitted to the top of a submarine s ballast tanks for the purposes of allowing the escape of air.The vent allows air contained in the tank to escape from the top of the ballast tank and be replaced by water entering through the… …   Wikipedia

• Blowoff valve — A blowoff valve (BOV) or dump valve is a pressure release system present in most turbocharged engines. Its purpose is to prevent compressor surge, and reduce wear on the turbocharger and engine. Blowoff valves relieve the damaging effects of… …   Wikipedia

• Kingston valve — A Kingston valve is a type of valve fitted in the bottom of a ship s fuel, water and ballast tanks. Named after its inventor John Kingston (1786 1847)an English engineer. [ Building the Steam Navy: Dockyards, Technology and the Creation of the… …   Wikipedia

• Drain-waste-vent system — DWV redirects here. For other uses, see Deformed wing virus. Detail of soil stack, which is connected to the sewer and vented at the top. In modern plumbing, a drain waste vent (or DWV) is part of a system that removes sewage and greywater from a …   Wikipedia

• PCV valve — The Positive Crankcase Ventilation valve, or PCV valve, is a one way valve that ensures continual evacuation of gases from inside a gasoline internal combustion engine s crankcase.ExplanationAs an engine runs, gases and combustion pressure are… …   Wikipedia

• breather-pressurization valve — An aneroid operated valve in the overboard vent line of the engine lubrication system of some gas turbine engines. The valve is open at sea level but closes as the aircraft climbs and maintains sea level pressure inside the vent system …   Aviation dictionary

• oil tank pressurizing valve — A check valve in the oil tank vent system that maintains an air pressure normally between 3 and 6 psi on the oil. This ensures that oil is supplied to the engine driven oil pump under positive pressure at all altitudes. A typical dry sump… …   Aviation dictionary

• safety valve — ► NOUN 1) a valve that opens automatically to relieve excessive pressure. 2) a means of giving harmless vent to feelings of tension or stress …   English terms dictionary

• safety valve — noun 1》 a valve that opens automatically to relieve excessive pressure. 2》 a means of giving harmless vent to feelings of tension or stress …   English new terms dictionary

• Safety instrumented system — A Safety Instrumented System (SIS) is a form of process control usually implemented in industrial processes, such as those of a factory or an oil refinery. The SIS performs specified functions to achieve or maintain a safe state of the process… …   Wikipedia