Title:
FUEL WATER SEPARATOR FILTER WITH WATER DRAIN
Document Type and Number:
WIPO Patent Application WO/2013/096179
Kind Code:
A8
Abstract:
A fuel water separator (FWS) filter that is configured to permit water to be drained from the water sump of the FWS filter without shutting off fuel flow to the FWS filter. A check valve is positioned between the water sump and the filter element. When the FWS filter is under vacuum (e.g. as in operation), the check valve can be closed to allow water to drain from the sump. The check valve can close automatically by floating on accumulated water in the sump until the water rises to a level where the check valve is closed. The check valve can also close by opening the drain valve of the FWS filter, which causes a differential pressure between the sump and the vacuum created in the filter element chamber, which forces the check valve to close.
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| JP3140641 | CARTRIDGE FILTER ELEMENT FOR FILTRATION |
| WO/2009/105901 | WATER FILTER CARTRIDGE FOR A WATER TANK OF A HOUSEHOLD APPLIANCE |
| WO/2004/007047 | FILTER CARTRIDGE |
Inventors:
TERRY BRIAN J (US)
CURT CAREY A (US)
JOHNSON MARK J (US)
CURT CAREY A (US)
JOHNSON MARK J (US)
Application Number:
PCT/US2012/070050
Publication Date:
May 08, 2014
Filing Date:
December 17, 2012
Export Citation:
Assignee:
CUMMINS FILTRATION IP INC (US)
International Classes:
B01D27/08; B01D17/02; B01D35/30; F02M37/28; F02M37/32
Attorney, Agent or Firm:
BROWN, Marshall, J. (3000 K Street NW,6th Floo, Washington DC, US)
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