发明名称 |
Valve Assembly and Method |
摘要 |
A valve assembly includes a housing defining a cavity and a bore which opens into the cavity. A valve member is disposed in the cavity. The valve member moves between an open position for allowing fluid flow through the housing and a closed position for preventing fluid flow through the housing. An actuator extends through the bore for moving the valve member between the open and closed positions. A packing is positionable in the bore to provide a seal about the actuator for preventing fluid from exiting the housing through the bore. The packing is ejectable from the bore. The valve assembly includes a first and second biasing member. The first biasing member is configured to apply a first force to the packing to provide the seal. The second biasing member is configured to apply a second force to the packing for ejecting the packing from the bore.
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申请公布号 |
US2013181153(A1) |
申请公布日期 |
2013.07.18 |
申请号 |
US201313744599 |
申请日期 |
2013.01.18 |
申请人 |
MARSHALL EXCELSIOR COMPANY;MARSHALL EXCELSIOR COMPANY |
发明人 |
BLANCHARD FREDERICK W.;COY NATHAN H. |
分类号 |
F16K31/524;F16K41/00 |
主分类号 |
F16K31/524 |
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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