COCK Russian patent published in 1995 - IPC

FIELD: valving. SUBSTANCE: autonomous seat with outlet passageway is mounted inside the housing having the inlet and outlet openings. The outlet part of the passageway in the horizontal plane is curved. The rod is mounted inside the housing. The outlet passageway of the valving member is U-shaped in the horizontal plane and has curved top side facing the outlet part of the seat passageway. The passageways of the seat and valving member are mounted for permitting them to be coincident when rod rotates. The rod and the member are made in block. The ring projection is provided around the outlet opening of the housing. The seat is self-adjusting and provided with the sealing flexible spacer interacting with the projection. The middle part of the passageway of the seat is inclined. The area of the outlet part of the seat passageway is grater than the area of the cross- section of the inclined passageway. The rod and seat are made of an aluminum alloy. Self-setting low friction coating is applied to the interacting surfaces. EFFECT: enhanced reliability. 4 dwg