VALVING CONTROL UNIT Russian patent published in 1997 - IPC

FIELD: valving. SUBSTANCE: space of the housing is separated into two chambers. The space of the second chamber downstream of the first seat receives the second rotatable slide and the second seat. The second rotatable slide is provided with openings and individual control mechanism. Between the first slide and first seat is a rolling bearing that is mounted with a slot spaced relation. The second slide has central cylindric projection on its end face that faces the first seat and is mounted with a slot spaced relation to the seat to define a delivery chamber. There are passageways in the housing. The passageways connect the second chamber with outlet branch pipe and can be shutoff by a valve for control of pressure relieve from the chamber mounted inside the housing. EFFECT: enhanced reliability. 2 dwg