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특허 상세정보

Valve seat for high temperature valve

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F16K-005/06    F16K-005/20   
미국특허분류(USC) 251/334 ; 251/160 ; 251/163 ; 251/315DU
출원번호 US-0916960 (1992-07-20)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 9  인용 특허 : 0

Valve such as a ball valve with a metal seat ring assembly comprising an outer ring seated in the valve body and an inner ring seated in the outer ring. The outer ring is formed with a lip projecting inwardly and presenting a sealing surface for contact with the valve closure member. The inner ring is formed with a lip behind which is an annular groove which permits flexing of such lip. The inner ring is seated within the outer ring. There is a small clearance between the lip and the outer ring which causes sealing between the closure member and the inne...


In a valve comprising a valve body having a flow passage for flow of fluid through the valve and a valve closure member of metal construction movable between an open position allowing such flow and a closed position preventing such flow, the improvement which comprises a valve seat of metal construction retained in said valve body and surrounding said flow passage, said valve seat having a metallic sealing surface which is in sealing contact with said closure member when the latter is in closed position, said valve seat being flexible such that it flexes...