Our DOT 407 Vent combines a low profile, light weight design with increased flow rates to meet the most demanding needs of virtually any DOT 407 tank.
The stainless steel valve seat seals on a Teflon encapsulated silicone O-Ring. This O-Ring provides complete chemical resistance and a bubble-tight seal to meet the latest DOT requirements. The unit also meets the surge requirements of 178.345-10 (b) (3) (ii) 1 liter.
