Apollo Valves 4A504A2F Pressure Vacuum Breaker, 3/4 in Connection, 150 psi Max Pressure, Brass

The Apollo model PVB4A and PVBLF4A pressure vacuum breaker A series prevents contamination of the potable water supply due to back-siphon age. A standard integral freeze protection relief valve serves to reduce the possibility of damage due to intermittent freezing conditions. The modular check valve cartridge provides a captured spring, a replaceable seat and a reversible silicone seat disc. This assembly features ball valve shutoffs with stainless steel handles and nuts as standard.