Watts 1 In Pressure Vacuum Breaker Vent Float Kit RK 800M4-V 0887710 is designed to check the pressure in a vacuum breaker. Includes all the components to repair worn-out or damaged parts in your plumbing system, such as a vented float, O-ring, and screws. It can be used with 1-inch pressure vacuum breakers. It prevents water from flowing back into the potable water supply. It meets all safety standards making it an excellent choice for any plumbing professional. Allows easy and efficient repairs reducing the need for costly replacements. Order your Pressure Vacuum Breaker Vent Float Kit today and experience Watts's high-quality.