HIGH-PRESSURE VALVE Russian patent published in 1994 - IPC

FIELD: manufacture of fittings. SUBSTANCE: high-pressure valve has housing with seat, stem, shut-off member with tail-piece and motion bush with external thread; motion bush is provided with tapped hole on side of seat and with out-of-round hole on opposite side, bore is made between these holes. Out-of- round hole of bush receives stem end. Tail-piece of shut-off member is provided with stop having external thread similar to that of hole of motion bush. Stop of tail-piece is received by bore of the bush. External thread of bush and thread of its hole ate of opposite direction. EFFECT: enhanced reliability. 1 dwg