Feature●1 Inch Pressure Vacuum Breaker Vent Float Kit●Ensure that the exhaust valve can effectively vent excess air or vacuum, thereby maintaining the stability and normal operation of the water supply system●By repairing the floating of the damaged exhaust valve, the kit can ensure the unimpeded flow of water, improving the efficiency and stability of water pressure of the water supply system●Backflow repair kit can provide reliable sewage backflow protection; When using water, control airflow to ensure that backflow valve remains open under normal working conditions; When no water is being used, float works with spring to form a closed circuit, effectively preventing sewage from flowing upstream into the drinking water supply●This repair kit is easy to install and requires no special tools or skills●Max pressure: 150psi, Min pressure: 15psi; Widely used in industrial plant, cooling tower, laboratory, laundry, swimming pool, lawn sprinkler and other waterproof reflux system●Include 1 x Vent Float, 1 x O-ring Seal, 1 x SpringDescription Homhelar 800M4 Vent Float Repair Kit 1" Fits For Watts 800QT Backflow Valve Back Flow Preventer Repair Kit