VALVE SEAT ASSEMBLY

专利名称：VALVE SEAT ASSEMBLY发明人：PHILIP JOSEPH BURTON申请号：AU2117683申请日：19831111公开号：AU558259B2公开日：19870122

摘要：In order to provide an unobstructed outer face on a retaining ring for the sealassembly of a butterfly valve, so that the outer face can make an improved seal with anadjacent pipe end, the retaining ring is held captive in the valve housing by a wire ring,instead of by the usual screws which penetrate the outer face and inhibit sealing with thepipe end. The wire ring is of regular polygonal shape such that the central portions of itssides are received in a radially outwardly facing groove in the retaining ring, and itscorners are received in a radially inwardly facing groove in the housing. A helical lead-ingroove in the housing connects with the housing groove to permit assembly of theretaining ring to the housing by a screwing action.

申请人：WINN, CHARLES VALVES LTD.

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