Pressure Vacuum Breaker Lead Free 3/4 in.

Prevent backflow of potable water due to backpressure with the Zurn Pressure Vacuum Breaker 3/4 in. Threaded Bronze. Built of low-lead cast bronze, this vacuum breaker is suitable for long-term outdoor use. It provides thorough protection against back-siphonage at a maximum pressure of 175 PSI. Thanks to its anti-freeze relief valve, this vacuum breaker lowers the possibility of valve damage due to freezing conditions.