Pneumatic trigger valve for spray gun

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

1995-11-27

1998-01-27

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

With cleaning means, drip collecting, waste disposal or soil...

Soil preventing gas shield

239124, 239290, 239415, 239528, 251151, 285319, B05B 128, B05B 900, F16K 5100, F16L 3900

Patent

active

057114854

ABSTRACT:
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 the spray gun from the spray booth and without the need to replace a number of small parts. 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.

REFERENCES:
patent: 4294411 (1981-10-01), Hastings et al.
patent: 5332159 (1994-07-01), Grime et al.
patent: 5460203 (1995-10-01), Smith et al.

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