发明名称 |
Restricted movement valve seats for an expanding gate valve |
摘要 |
In an expanding gate valve, tangential pins (70) are received loosely in peripheral grooves (62) of floating valve seats (26) to prevent the seats from moving inwardly far enough to drag against a gate mechanism (32) which is collapsed for movement between open and closed positions of the valve. Alternative arrangements provide retainer rings (122, 130) which engage shoulders (128) of the seats to limit their inward floating movement.
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申请公布号 |
US4246928(A) |
申请公布日期 |
1981.01.27 |
申请号 |
US19790095911 |
申请日期 |
1979.11.19 |
申请人 |
ACF INDUSTRIES, INCORPORATED |
发明人 |
BURNS, IVAN A.;HOCHMUTH, WILLIAM R. |
分类号 |
F16K3/16;F16K3/18;(IPC1-7):F16K43/00 |
主分类号 |
F16K3/16 |
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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