Pneumatic trigger valve for spray gun

Details Pneumatic trigger valve for spray gun Pneumatic trigger valve for spray gun

B - Operations, Transporting

05

B

B05B 12/00 (2006.01) B05B 7/12 (2006.01)

Patent

CA 2191169

The invention is directed to an improved pneumatic valve for use in paint spray guns of the type having a pneumatic trigger operating mode. When actuated by a trigger, the valve vents a pressurized chamber in the spray gun, causing a piston to move to open air and fluid valves for initiate spraying. The pneumatic valve is in the form of a snap in module which is easily replaced without the need to remove thespray gun from the spray booth and without the need to replace a number of smallparts. A small return spring and the pressurized air urge a valve poppet to a closed position. When the trigger is operated, the poppet is unseated to vent the pressurized chamber in the spray gun. The flow of air through the valve during painting prevents dirt and paint overspray from accumulating on the valve.

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