F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
137/66
F16K 31/12 (2006.01) E03F 3/00 (2006.01) F17D 3/01 (2006.01)
Patent
CA 1239328
ABSTRACT OF THE DISCLOSURE A vacuum sewerage transport system is provided herein having a vacuum interface valve apparatus utilizing a sub-surface, in- pit breathing, drainage and venting apparatus for a differential- pressure-controlled, sensor-controller unit. Such system includes a sewage accumulation receptacle for sub-surface installation and for collecting sewage for discharge into the transport system, the receptacle being adapted for connection to conduit means communicating with a remote pressure source to maintain the receptacle before and after discharge at a pressure level above the normal sub-atmospheric pressure of the transport system. A differential-pressure-operated flow control valve is provided which is adapted sequentially to open and close in response to pre-selected pressure levels and to facilitate the discharge of sewage from the receptacle into the sewerage transport system. Finally, conduit means are disposed between the valve and the receptacle for sub-surface installation, such conduit means thereby providing continuous communication of the pressures developed in the receptacle with the differential- pressure-operated flow control valve for sequential operation thereof.
468555
Grooms John M.
Jones Mark A.
Borden Ladner Gervais Llp
Burton Mechanical Contractors Inc.
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