Fluid handling – Self-proportioning or correlating systems – Self-controlled branched flow systems
Patent
1994-11-28
1996-05-14
Michalsky, Gerald A.
Fluid handling
Self-proportioning or correlating systems
Self-controlled branched flow systems
91451, 137269, 137489, 13759612, 13759613, 1375992, F15B 1302, F16K 1710
Patent
active
055158790
ABSTRACT:
A pressure control valve having a housing with a main inlet passage and a bypass outlet passage. A combined control is located in the housing to control the flow of fluid from the main inlet passage to the bypass outlet passage. The combined control includes a chamber in the housing having an inlet connected to the main inlet passage, an outlet connected to the bypass outlet opening and a loading opening. A poppet is located in the chamber and is movable between a first position closing the inlet and a second position opening the inlet to allow fluid to flow from the main inlet passage to the bypass outlet passage. A spool is positioned within the poppet and is movable between an open position allowing fluid to flow between the main inlet passage and the bypass outlet passage. A spring biases the spool toward the closed position. A connecting passage is located in the housing to connect the main inlet passage to the loading opening.
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