发明名称 |
Method of refurbishing a high-pressure plug valve |
摘要 |
A high-pressure plug valve is refurbished by replacing a valve plug, a valve plug cage, and flow path inserts that line a flow path through the plug valve. The valve plug cage has first and second opposed flat side surfaces, each side surface has a port for receiving one of the replaceable flow-path inserts in a fluid-tight seal. In one embodiment, refurbishing the plug valve includes replacing at least one inset seal for sealing at least one of the ports when the plug is in a closed position to inhibit leakage through the valve at low fluid pressures.
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申请公布号 |
US7703205(B2) |
申请公布日期 |
2010.04.27 |
申请号 |
US20070787388 |
申请日期 |
2007.04.16 |
申请人 |
STINGER WELLHEAD PROTECTION, INC. |
发明人 |
MCGUIRE BOB;DALLAS L. MURRAY |
分类号 |
B23P6/00;F16K5/00
C14/28;C23C28/00 |
主分类号 |
B23P6/00 |
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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