Apollo 3/4 in. Bronze Lead Free FIP Pressure Vacuum Breaker with Union Shut-Off Valves

This vacuum breaker prevents contamination of the potable water due to back siphon-age. A integrated freeze protection relief valve serves to reduce the possibility of damage due to intermittent freezing conditions. The modular check valve cartridge provides a capture stainless steel spring, a replaceable seat, and a reversible silicone seat disc. Union end shut-off valves for quick discount during intermittent freezing.