Additional InformationASSE 1020-2004e1|CSA B.64.1.2|IAPMO Listed|NSF Approved|USC FCCC/HR
Marketing InformationThe Apollo® model PVB4A and PVBLF4A pressure vacuum breaker A Series prevents contamination of the potable water supply due to back siphonage. 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 shut-offs with stainless steel handles and nuts as standard.