Ball Float Vent Valve

Serves as an overfill protection device in manifolded underground tank lines and complies with the EPA's 90% capacity fill restriction. At a predetermined level during UST filling, the ball float rises and seats tightly against a specially designed valve seat restricting the vapor flow back to the transport tanker creating pressure and substantially reducing the product drop flow which signals the attendant to stop filling the UST. Rust resistant epoxy coated steel body, brass cage, stainless steel ball float.