ICHEPLUS 720A Pressure Vacuum Breaker Repair Kit for 1/2 3/4 and 1 inch

["Fits 1/2 Inch to 1 Inch 720A. This Pressure Vacuum Breaker Repair Kit is compatible with 1/2-inch, 3/4-inch and 1-inch 720A.","Made of stainless steel, rubber and plastic, wear-resistant and prolong service life.","The 720A series pressure vacuum breaker assembly is designed for installation on potable water lines to protect against back-siphonage of contaminated water into the potable water supply.","The kit contains the following: Plastic Washer,O-Ring,Spring,Poppet Assembly,Spider Assembly","Suitable for 720A pressure vacuum circuit breakers,(also known as a backflow preventer), This kit will repair most freeze damaged 720-A PVB's, unless the ball valves or body itself is cracked"]