All Pressure/Vacuum Vents have three (3) separate valves that address pressure/vacuum conditions in underground storage tanks (UST) and above ground storage tanks (AST).
Features/Benefits
The three (3) valve system provides the necessary protection and durability needed in UST and AST vent caps.
The vacuum valve is diaphragm operated and provides ten (10) times more sealing force than gravity devices. It consistently opens at 6” - 10” of water column (WC) / 1.5 - 2.5 KPa vacuum.
The first over-pressure valve is diaphragm operated, giving ten (10) times more sealing force than gravity devices. It opens at 2.5” - 6” WC / .63 - 1.5 KPa pressure.
Not for use in California / EVR applications.
Certified to less than 1/3 of the CARB EVR Standard CP-201 which allows installation of three (3) P/V Vents maximum. This reduces installation time by not having to manifold the vent pipes together.
Threaded vent cap that is easily installed by using the caston hex nut which allows tightening without having to go between vent pipes.
Constructed from materials 100% compatible with B0-B20 and E0-E85.
