发明名称 |
Dual seal butterfly valve |
摘要 |
A wafer type butterfly valve having a spherical segment body interior contoured to receive a disc seal having upstream and downstream seals. The seals are configured to fit disc grooves and are curved to fit the body contour. Mechanical retainers are provided and there is provision for adjustably applying pressure to the seals.
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申请公布号 |
US4248404(A) |
申请公布日期 |
1981.02.03 |
申请号 |
US19790065222 |
申请日期 |
1979.08.09 |
申请人 |
ALLIS-CHALMERS CORPORATION |
发明人 |
GOLDMAN, HOLLIDAY L. |
分类号 |
F16K1/226;(IPC1-7):F16K1/22 |
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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