PNEUMATIC PUMP SWITCHING APPARATUS

摘要

A coating material spray application system includes first and second coating material supplies(16);first and second coating material pumps(18)and first and second feed hoses(24);wherein each feed hose(24)is in communication with a respective one of the coating material pumps(18)and has a respective coating material hose outlet(26).Each pump(18)is operable to transfer coating material from a respective one of the supplies to the respective feed hose.A spray booth(12)may be used and a coating material spray gun(14)operable within said spray booth,with the spray gun(14)being connectable to a selected one of the coating material hose outlets(16).A source of pressurized air(30)operates the pumps;and a pneumatic switch(40)accessible from within the spray booth is operable to connect the pressurized air to a selected one of said coating material pumps which corresponds to the selected coating material hose outlet.