- 4A Check Complete Kit
- Size: 1.25 in. - 1.5 in.
- For 4A Series PVB, Double Check Assembly, and Reduced Pressure Assembly #2 Check
- Includes: O-rings and Check Assembly
The 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 shutoffs with stainless steel handles and nuts as standard.