Vacuum valve definition

Vacuum valve means a spring-loaded device which is activated automatically by pressure the purpose of which is to protect the tank against unacceptable negative internal pressure;
View Source
Vacuum valve means a self-closing, spring-loaded device the purpose of which is to protect the tank against unacceptable negative internal pressure.
View Source
Vacuum valve means a special valve installed at the interface between a vacuum collection sewer and the holding tank which collects gravity discharge from one or more “Building Sewers.” The vacuum valve’s function is to automatically introduce the discharge from the building sewer(s) into the vacuum collector sewer.
View Source

Related to Vacuum valve

  • Plasma arc incinerator means any enclosed device using a high intensity electrical discharge or arc as a source of heat followed by an afterburner using controlled flame combustion and which is not listed as an industrial furnace.

  • Nitrogen oxides means nitric oxide and nitrogen dioxide, expressed as nitrogen dioxide (NO2);

  • Valve means a device used to control the flow of water in the irrigation system.

  • Diameter at Breast Height (DBH) means the diameter of the trunk of a mature tree generally measured at a point four and a half feet above ground level from the uphill side of the tree. For species of trees where the main trunk divides below the 4 ½ foot height, the DBH shall be measured at the highest point before any division.

  • Diatomaceous earth filtration means a process resulting in substantial particulate removal in which a precoat cake of diatomaceous earth filter media is deposited on a support membrane (septum), and while the water is filtered by passing through the cake on the septum, additional filter media known as body feed is continuously added to the feed water to maintain the permeability of the filter cake.