发明名称 |
Valve sealing device |
摘要 |
A sealing device for a valve which includes a valve body having a fluid passage and an inner valve for opening or closing said fluid passage, said sealing device comprising a seat packing disposed in a peripheral groove formed in the valve body and partly projecting therefrom into the fluid passage, said seat packing being so constructed that the durability and the fluid shut-off performance are promoted by the combined effect of the fluid pressure in the fluid passage acting against said seat packing and the elastic force of a metallic annular elastic member associated with said seat packing.
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申请公布号 |
US4258901(A) |
申请公布日期 |
1981.03.31 |
申请号 |
US19790047293 |
申请日期 |
1979.06.11 |
申请人 |
TOKYO KOSO KABUSHIKI KAISHA |
发明人 |
ZINNAI, SADAZI;OKAYASU, TAKESHI |
分类号 |
F16K1/226;F16K5/06;(IPC1-7):F16K25/00 |
主分类号 |
F16K1/226 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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