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1.Hot air transfer valve with constant flow area for all valve positions 失效
Title translation: 热空气传输阀,具有恒定流量区,适用于所有阀位置公开(公告)号:US3448770A
公开(公告)日:1969-06-10
申请号:US3448770D
申请日:1966-04-22
Applicant: VAPOR CORP
Inventor: EDGEMOND JOHN W JR , BOYEN JOHN L
CPC classification number: F16K3/06 , Y10T137/87812