FIELD: machine building.
SUBSTANCE: pressure controls provided with a cavity are proposed. According to the invention, the control presented in the examples includes the housing having inlet and outlet holes for fluid medium under pressure. Piston connected in the flow direction to both of the above holes, as well as to the control inlet is located in the housing. Piston has the configuration providing the possibility of its contact with valve seat and controlling fluid medium flow in the section from inlet hole to outlet hole in response to the pressure applied to piston surface through control inlet.
EFFECT: improved reliability determined with smaller total number of components; the presented control unit with several outlets is manufactured with lower costs for manufacture and assembly, with reduced operating costs.
15 cl, 2 dwg
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