Vacuflush head

Discussion in 'Sport Cruisers' started by davidmcd, Mar 22, 2019.

  1. davidmcd

    davidmcd New Member

    4
    Apr 23, 2017
    Lake Erie
    2003 Sundancer 300DA
    350 MAG w/Bravo 3 drives
    What are the size of the duckbill valves in my 300DA and is the inline filter for holding tank standard
     
  2. electricaldoctor

    electricaldoctor Well-Known Member TECHNICAL Contributor PLATINUM Sponsor

    May 14, 2008
    Thousand Islands, Rockport, Ontario.
    1988 390 EC
    454 Mercruiser Gassers
    1-1/2"

    Yes
     
  3. davidmcd

    davidmcd New Member

    4
    Apr 23, 2017
    Lake Erie
    2003 Sundancer 300DA
    350 MAG w/Bravo 3 drives
    Thanks so much for the info
     
  4. MickT

    MickT Member

    90
    Aug 5, 2016
    australia - newcastle
    2006 sundancer 300
    twin mercruiser 5.0 mpi w/bravo III
    Depends exactly what vaccu-flush unit you have.....

    In my 2006 300da, the vaccu-flush unit has 4 duckbills that are a larger size (possibly 2 inch?) on the vacuum generator, and 2 duckbills of a smaller size (possibly 1.5 inch) on the macerator/discharge pump.

    Somewhere on your unit should be a plaque or sticker with a list of parts for rebuild.

    Edit - auto correct keeps changing vaccu flush to vaccine flush....
     
    Last edited: Mar 24, 2019
  5. electricaldoctor

    electricaldoctor Well-Known Member TECHNICAL Contributor PLATINUM Sponsor

    May 14, 2008
    Thousand Islands, Rockport, Ontario.
    1988 390 EC
    454 Mercruiser Gassers
    My 390 S-Pump had (4) 1-1/2" duckbills.
     
  6. carterchapman

    carterchapman Well-Known Member TECHNICAL Contributor SILVER Sponsor

    Mar 25, 2008
    Lake Chickamauga/Marietta, GA/Ft. Myers, FL
    2006 Sea Ray 58 DB
    MAN CRM V8-900s, Twin Disc Drives; Onan 21.5 Generator
    VG-2 pumps use four 1 1/2" duckbills and VG-4 pumps use four 2" duckbills.
     

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