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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0138290 (1980-04-08) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 7 인용 특허 : 0 |
A backflow preventer valve including a housing structure having inlet and outlet ports therethrough for attaching to system conduits, a chamber formed in the housing, a pair of spaced valve seats associated with one of the ports including a space formed between the valve seats, a movable valve assem
A backflow preventer valve comprising a housing structure having top and bottom portions and a chamber formed therein with inlet and outlet ports, a pair of spaced valve seats associated with one of said ports including means on said housing structure forming a space between said valve seats, a mova
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