发明名称 |
SUMP-VENTED CONTROLLER MECHANISM FOR VACUUM SEWERAGE TRANSPORT SYSTEM |
摘要 |
<p>An apparatus for preventing waterlogging of the sensor and controller valves used to regulate operation of the vacuum interface valve in a sump vented vacuum sewerage system. A float valve operates in accordance with the sewage level in a sump pit and communicates atmospheric pressure to the sensor and controller valves while the sewage level is below a predetermined limit, but closes passage of sewage therethrough once the sewage level exceeds the predetermined limit. A pressure-relief valve may also be operatively connected to the float valve that vents excessive hydrostatic pressure buildups in the sump pit to the atmosphere.</p> |
申请公布号 |
EP0821753(A4) |
申请公布日期 |
1998.12.16 |
申请号 |
EP19960913216 |
申请日期 |
1996.04.26 |
申请人 |
AIRVAC, INC. |
发明人 |
FEATHERINGILL, BURTON, A.;GROOMS, JOHN, M. |
分类号 |
E03F3/02;E03F1/00;E03F5/22;E03F7/00;(IPC1-7):E03B5/00 |
主分类号 |
E03F3/02 |
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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