发明名称 Snow hydrant
摘要 A method and device for valving liquid flow through a conduit which avoids high pressure flow characteristics such as valve chatter due to turbulence and turbulence-enduced corrosion by spoiling the flow of liquid so as to break up the liquid front into diverse streams and thereafter closely regulating flow through the incipient stage to full flow stage.
申请公布号 US4703776(A) 申请公布日期 1987.11.03
申请号 US19860828614 申请日期 1986.02.12
申请人 RUMNEY, ROGER E. 发明人 RUMNEY, ROGER E.
分类号 F16K1/54;F16K47/04;(IPC1-7):F16K1/48;F16K1/52 主分类号 F16K1/54
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