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Thread: fuel pump barbed fitting question

  1. #1

    Join Date
    Nov 2014
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    Sebastian, FL
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    38

    Default fuel pump barbed fitting question

    Before I ask the question I want to thank everyone for all their help and information on this site - very friendly group!

    On the fuel pump for the Rotax 912 - I'm having trouble getting information about the barbed fitting on the bottom - I assume its for fuel pressure readout, but if I chose to not put a pressure gage on the panel does anyone have any recommendations for terminating that line?

    Thanks!

  2. #2
    Senior Member jiott's Avatar
    Join Date
    Jun 2010
    Location
    Portland, OR
    Posts
    2,960

    Default Re: fuel pump barbed fitting question

    That is for a drain line, usually plastic tubing, and must NOT be closed off. Run the line to the back of the lower cowl; normally nothing comes out of it.
    Jim Ott
    Portland, OR
    Kitfox SS7 flying
    Rotax 912ULS

  3. #3

    Join Date
    Nov 2014
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    Sebastian, FL
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    38

    Default Re: fuel pump barbed fitting question

    Thanks very much!

  4. #4
    Senior Member jrevens's Avatar
    Join Date
    Aug 2009
    Location
    Arvada, CO
    Posts
    2,146

    Default Re: fuel pump barbed fitting question

    That is a vent. If the diaphragm in the pump fails, fuel will come out there. There used to be just a hole on older pumps. Keep in mind that if there is a diaphragm failure, you don't want the line terminating where fuel will contact a hot exhaust pipe.
    John Evens
    Arvada, CO
    Kitfox SS7 N27JE
    EAA Lifetime
    Chap. 43 honorary Lifetime

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