RK709CK4 Watts 3/4" - 1" 1st or 2nd Backflow Check Repair Kit For Series 709

• Check kit
• All parts are made of high quality materials
• No special tools required for changing parts
• Factory Replacement Kit

This 3/4 to 1 inch check valve kit is for series 709, which helps to prevent the reverse flow of polluted water from entering into the potable water supply. This kit consist of a disc assembly, spring, seat, seat O-ring, and a cover O-ring.