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 (162) in a sump- vented vacuum sewerage system. A float valve (250) operates in accordance wi th the sewage level in a sump pit (154) and communicates atmospheric pressure t o the sensor and controller valves while the sewage level is below a predetermined limit, but closes passage of sewage therethrough once the sewa ge level exceeds the predetermined limit. A pressure-relief valve may also be operatively connected to the float valve (250) that vents excessive hydrostatic pressure buildups in the sump pit (154) to the atmosphere.</SDOA B></p> |
申请公布号 |
CA2219218(A1) |
申请公布日期 |
1996.10.31 |
申请号 |
CA19962219218 |
申请日期 |
1996.04.26 |
申请人 |
AIRVAC, INC. |
发明人 |
GROOMS, JOHN M.;FEATHERINGILL, BURTON A. |
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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