PRESSURE CONTROLLER Russian patent published in 2010 - IPC G05D16/10 

FIELD: engines and pumps.

SUBSTANCE: proposed pressure controller comprises body with intake and discharge chambers accommodating two aligned control valves with control chambers, and draining system. First control member represents a hydraulic gate valve housing second control member representing a valve. This valve rod has one end accommodating a barrel turned upside down and arranged between intake chamber and discharge chamber seat. Rod second end represents a piston around which arranged is third control member aligned with the former, and representing circular piston with control chamber. First and second control members are spring loaded for them to be returned into initial position. Jacket with channels and working chamber is arranged around first control member to along its surface to prohibit working medium from ingress into pressure controller. Control chambers of all control members and jacket are communicated with pressure controller inlet chamber.

EFFECT: fast operation, expanded operating performances, optimised design.

2 dwg