Ball valve

Details Ball valve Ball valve

F - Mech Eng,Light,Heat,Weapons

16

K

251/54

F16K 5/06 (2006.01)

Patent

CA 1208192

- 15 - A BALL VALVE ABSTRACT OF THE DISCLOSURE A disposable ball valve wherein the union is adhered inside the valve body of the valve housing so as to form the valve chamber for rotatably receiving the ball therein. On the surfaces of the valve body and the union facing the ball, annular grooves of rectangular cross- -sectins are formed. Within the annular grooves, there are fitted annular seating rings made of polytetrafluoro- ethylene backed by resilient rubber rings. Thus, the ball and the union do not disconnect from the valve housing by applied fluid pressure, and the sealing performance of the ball valve can be maintained for a long period. In addition, contact surfaces of the valve housing and the tubular caps are formed in the shape of complementary spherical surfaces slidable to each other. Thus, even if the pipelines are deviated from the axis of the flow passage by means of external forces, the ball valve substantially does not receive such excess forces.

427338

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