Novel it is pneumatic by switching -over valve

The utility model relates to a novel it is pneumatic by switching -over valve, including the disk seat, go up the valve body, lower valve body at the last valve body and the case of valve body internal slipping down, links and stretches out the valve rod of valve body with the case, drives valve rod's pneumatic component, it is equipped with feed inlet and the discharge gate that is used for liquid medium to flow in or flow respectively with lower valve body one side to go up the valve body, be equipped with on the case respectively can with feed inlet and discharge gate sealing connection's upper end valve clack and lower extreme valve clack, the lower extreme valve clack offsets with the lower left and right both sides lateral wall of valve body respectively and leans on department to be equipped with and time valve body swing joint's connecting piece, be equipped with on the valve body down and supply connecting piece male slot, be equipped with on the connecting piece and be used for the close -fitting un