发明名称 |
Corporation stop assembly |
摘要 |
A fitting for coupling a service line to a polyethylene fluid distribution pipe such as a water main or a gas main includes a stub length of polyethylene pipe that serves as a base for attaching a corporation stop valve. The cross section of the open base end is machined to match the curvature of the outside surface of the main pipe and then fused into the sidewall of the main. The corporation stop valve can then be used for hot tapping polyethylene mains.
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申请公布号 |
US5988199(A) |
申请公布日期 |
1999.11.23 |
申请号 |
US19960742707 |
申请日期 |
1996.11.01 |
申请人 |
PHILLIPS PETROLEUM COMPANY |
发明人 |
RYAN, TIMOTHY B.;SVETLIK, HARVEY E. |
分类号 |
F16L47/28;(IPC1-7):F16K43/00;F16L41/04 |
主分类号 |
F16L47/28 |
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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