Technical requirements for foot valve in high pressure cleaning machine

　　The foot valve is a switch for disconnecting high-pressure water and supplying high-pressure water to the spray gun. It is required to be able to be opened and closed quickly, the action is required to be sensitive, the sealing performance should be good when closing, and no water leakage will occur, otherwise it will affect the operation and safety. In order to meet the requirements of the working conditions, the combined sealing structure is adopted to overcome the phenomenon that the pressure cannot be sealed due to high pressure.