vacuum relief valve


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vacuum relief valve

[′vak·yəm ri′lēf ‚valv]
(engineering)
A pressure relief device which is designed to allow fluid to enter a pressure vessel in order to avoid extreme internal vacuum.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

vacuum relief valve

An automatic valve that opens and closes a vent for relieving a vacuum within a hot water supply system.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
I bought a new vacuum gauge and vacuum relief valve from W.W.
Pentair Valves & Controls has introduced the new Anderson Greenwood 4000 Series of pressure and vacuum relief valves, compliant with the latest API 2000 standard.
The company said that Enardo had sales of about USD65m last year, employs 140 at its headquarters and operations in Tulsa, Oklahoma and now manufactures tank and terminal safety equipment such as hatches, vent, pressure and vacuum relief valves and flame arrestors for the oil and gas, petrochemical, chemical and other industries.
It produces tank and terminal safety equipment, like hatches, vent, pressure and vacuum relief valves and flame arrestors.
The last paragraph in the article claims that vacuum relief valves eventually fail and when they do, they can cause the water to boil and burst the tubes.
Accessories available include liquid separators, anti cavitation devices, heat exchangers, check valves and vacuum relief valves. The larger Dolphin LU and LH versions are Atex compliant and offer nominal displacement ratings from 20 up to 1600 [m.sup.3]/hr.