pressure-vacuum

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• Pressure vacuum breaker — A Pressure Vacuum Breaker (PVB) is a type of backflow prevention device,used to keep non potable (or contaminated) water from entering the water supply. A PVB is similar to an atmospheric vacuum breaker (AVB), except that the PVB contains a… …   Wikipedia

• pressure-vacuum valve — /presh euhr vak yooh euhm, yoohm/ a valve for relieving a sealed tank of any pressure or vacuum exceeding acceptable limits. * * * …   Universalium

• pressure-vacuum valve — /presh euhr vak yooh euhm, yoohm/ a valve for relieving a sealed tank of any pressure or vacuum exceeding acceptable limits …   Useful english dictionary

• pressure-vacuum cap — Fuel tank filler cap designed to prevent loss of fuel or vapor from tank …   Dictionary of automotive terms

• Vacuum — This article is about empty physical space or the absence of matter. For other uses, see Vacuum (disambiguation). Free space redirects here. For other uses, see Free space (disambiguation). Pump to demonstrate vacuum In everyday usage, vacuum is… …   Wikipedia

• Pressure measurement — The construction of a bourdon tube gauge, construction elements are made of brass Many techniques have been developed for the measurement of pressure and vacuum. Instruments used to measure pressure are called pressure gauges or vacuum gauges. A… …   Wikipedia

• Vacuum distillation — At atmospheric pressure, dimethyl sulfoxide boils at 189°C. Under a vacuum, it distills off into the connected receiver at only 70°C. Vacuum distillation is a method of distillation whereby the pressure above the liquid mixture to be distilled is …   Wikipedia

• Vacuum flange — Conflat redirects here. For other uses, see Conflat (disambiguation). A KF 25 tee, o ring, and clamp. A vacuum flange is a flange at the end of a tube used to connect vacuum chambers, tubing and vacuum pumps to each other. Contents …   Wikipedia

• Vacuum deposition — Not to be confused with Vacuum coating. Vacuum deposition is a family of processes used to deposit layers atom by atom or molecule by molecule at sub atmospheric pressure (vacuum) on a solid surface. The layers may be as thin as one atom to… …   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

• vacuum gage pressure — neigiamasis slėgmačio slėgis statusas T sritis fizika atitikmenys: angl. negative pressure; underpressure; vacuum gage pressure; vacuum gauge pressure vok. negativer Druck, m; Unterdruck, m rus. вакуумметрическое давление, n; отрицательное… …   Fizikos terminų žodynas