720A Pressure Vacuum Breaker Repair Kit Replacement for 1/2 3/4 1 inch Fitment:This 720A Pressure Vacuum Circuit Breaker Service Kit is compatible with 1/2 inch, 3/4 inch, and 1 inch. Function: The 720A Series Pressure Vacuum Circuit Breaker Assembly is designed to be installed on the drinking water line to prevent the water stop from backsiphonage into the drinking water supply system. Unless the ball valve or valve body itself is broken, this pressure vacuum circuit breaker repair kit will repair most of the frozen 720A PVB. Material: This product is made of high-quality material, which is durable. Applicable Temperature Range: 33 ° F to 110 ° F. Fitment: This 720A Pressure Vacuum Circuit Breaker Service Kit is compatible with 1 2 inch, 3 4 inch, and 1 inch. Function: The 720A Series Pressure Vacuum Circuit Breaker Assembly is designed to be installed on the drinking water line to prevent the water stop from backsiphonage into the drinking water supply system. Unless the ball valve or valve body itself is broken, this pressure vacuum circuit breaker repair kit will repair most of the frozen 720A PVB. This product is made of stainless steel, rubber and plastic, which is durable. Material: Metal+ABS Color: As Shown Package Contents: 1Set * Pressure Vacuum Breaker Bonnet Repair Kit