Blackwater and Greywater ...seperate?

Discussion in 'Boat Design' started by Mick@itc, Jan 27, 2011.

  1. michael pierzga
    Joined: Dec 2008
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    Location: spain

    michael pierzga Senior Member

    As Fred states ....Best to mount the throne directly on top of the black tank. NO PLUMBING..

    If not possible, normal PVC for poop handling is best... with only a short flexlink of Sewage Grade hose. PVC is cheaper, easy to use, doesn't permeate foul smell and is very smooth on the inside so resists calc buildup. Keep your runs as straight as possible, always downhill, to avoid wet spots that will calc fast and hiding places for short tail bilge rats. .

    PVC is not suitable for sea water inlet water handling...use a higher grade of plastic pipe.

    Remember ...a few times per season....especially if you're entertaining the ladies...you will be putting on your Indiana Jones Hat, grabbing tools and flashlight...then seeking the lost continent inside your Poop system.

    Strategically placed pipe unions and easy access PVC "Y" sections pipe cap plugged then used as a gateway that you can fit with a wet and dry vac will make your voyage of sewage discovery much more civilized.

    To reliably blow tank fulls of stored charter sauce , the most effective pumps are electric diaphram duck bill flapper style set up with a timer switch..

    Mount well above waterline with a "Y" valve on the outlet to blow the sauce skyward thru a deck fill and into the nearest Jetski or deep into Davy Jones locker .
     

  2. michael pierzga
    Joined: Dec 2008
    Posts: 4,862
    Likes: 116, Points: 0, Legacy Rep: 1180
    Location: spain

    michael pierzga Senior Member

    Additionally...for a sweet smelling boat ...attention should be paid to the black and grey...Vent system.

    No easy choice. Keep them separate. Don't use the mast or your whole boat will stink. Water line level vents work OK...Sheer line vents work OK.

    I prefer a " T" system layout to vent out of both sides of the boat and generate a vacuum no matter what side is presented to the wind.
     
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