Series 765 Pressure Vacuum Breakers include a freeze sensor for use with SentryPlus Alert® technology to signal when ambient temperature approaches the freeze threshold. Activated through an add-on connection kit, the sensor also triggers freeze alerts to facility personnel. Connection kit available for building/irrigation management system (BMS/IMS). This series is designed to provide protection against back siphonage of toxic or non-toxic liquids. They feature a durable bronze body and check valve and air-opening port in one assembly. The maximum working pressure is 150 psi (10.3 bar).