Vacuum relief valve definition

Vacuum relief valve means a device that admits air into the water distribution system to prevent excessive vacuum in a water storage tank or heater.
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Vacuum relief valve means a device to prevent excessive vacuum in a pressure vessel.
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Vacuum relief valve means a device that automat- ically relieves or breaks a vacuum, thereby preventing back- siphoning.
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More Definitions of Vacuum relief valve

Vacuum relief valve means a device that automatically relieves or breaks a vacuum, thereby preventing backsiphoning.
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Vacuum relief valve means a device that automatically re- lieves or breaks a vacuum, thereby preventing backsiphoning.
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