Vacuum breaker definition
Vacuum breaker means "backflow preventer" as defined by this administrative regulation.
Vacuum breaker means a device used to equalize the pressure of the vapor space across the floating roof deck as the deck is either being landed on or floated off its legs.
Vacuum breaker means a device that will prevent backflow when pressure in the system upstream of the device falls below atmospheric pressure. Air is only admitted downstream of the device;
Examples of Vacuum breaker in a sentence
The high voltage equipment shall incorporate a Ring Main Unit rated 630A, 350 MVA for 3 seconds or similar equipment approved in writing by the Engineer, fitted with a suitable bracket with wooden clamping blocks, below terminals of switchgear, to clamp and support up to 185 mm² PILCDSTA cable for a 315 KVA and up to 185 mm² for 630 KVA and a SF6 or Vacuum breaker.
More Definitions of Vacuum breaker
Vacuum breaker means a device that permits entrance check of air into the water supply distribution line to prevent backsiphonage.
Vacuum breaker means a device that permits entrance of air into the potable water supply distribution line to prevent backsiphonage.
Vacuum breaker means backflow preventer.
Vacuum breaker means a device that permits air into a water supply distribution line to prevent
Vacuum breaker means a device used to equalize the pressure of the vapor space across the floating roof deck as the deck is either being landed on or floated off its legs. *[A vacuum breaker consists of a well with a cover. Attached to the underside of the cover is a guided leg long enough to contact the tank bottom as the floating roof is being landed. When in contact with the tank bottom, the guide leg mechanically lifts the cover off the well.]*
Vacuum breaker means a device designed and constructed to automatically relieve the vacuum in an irrigation pipeline.
Vacuum breaker means "backflow preventer" as defined by this administrative regu- lation.