Ball valve

Details Ball valve Ball valve

1988-07-21

1989-03-28

Chambers, A. Michael

Valves and valve actuation

Rotary valves

Ball valve

251171, 251368, F16K 520

Patent

active

048157040

ABSTRACT:
The ball valve according to my invention comprises a pressure-tight housing ith at least one inlet-side and at least one outlet-side connecting pipe element, a valve ball made of sintered ceramic material, a valve seat and an operating shaft connected to the ball valve and guide through a shaft seal of the housing. The valve seat comprises seat rings which are clamped between the connecting pipe elements sealing the housing and are compressed on the valve ball. According to my invention the inlet-side seat ring placed on the inlet-side connecting pipe element is made of a flexible sealing material and the outlet-side seat ring put on the outlet-side connecting pipe element comprises a sintered ceramic ring which is inserted in the housing with a sealing element interposed and is resiliently supported on the outlet-side connecting pipe element.

REFERENCES:
patent: 3547403 (1970-12-01), Grauer
patent: 3592440 (1971-07-01), McFarland
patent: 4771803 (1988-09-01), Berchem et al.

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