F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
137/39
F16K 17/04 (2006.01) B05B 1/30 (2006.01) B05B 12/08 (2006.01) F16K 11/02 (2006.01)
Patent
CA 1197437
MULTIPLE FUNCTION VALVE ASSEMBLY Abstract of the Disclosure A valve assembly is provided for a paint color change system for directing paint to spray guns from either of two supply lines selectively while con- necting the other line to exhaust, and simultaneously controlling the paint pressure as a function of pilot air pressure. A valve block contains two pairs of poppet valves, each pair having a common inlet chamber connected to one of the paint supply lines and contain- ing a pair of poppets each biased toward a seat for controlling flow to an outlet chamber, and a pilot air operated diaphragm in each outlet chamber coupled with a poppet for regulating the position of the poppet in accordance with the paint pressure in the outlet chamber and pilot air pressure. The outlet chambers are connected to an exhaust line and the paint spray guns respectively so that the two pairs of poppet valves acting in concert under control of two pilot air signals can control which paint line is connected to the spray gun or to the exhaust as well as regulate the pressure or volume of paint flowing to the spray guns.
432668
Malarz Antoni J.
Wright Dolph D.
General Motors Corporation
Gowling Lafleur Henderson Llp
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