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  1. #1
    Fireside Member
    Join Date
    Aug 2019
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    Combined 2 drain dumps into 1

    I watched a All About RVs YouTube post and got inspired to combine my rear gray water discharge with the front gray and black. Tried out yesterday and works great. Also lets me combine both gray tanks by shutting the T-80 Valterra dump valve and opening both gray tank valves. I just need to do some foaming and it will be complete. I did have to reorient my fresh water valve (handle pointing to the rear)and remove my factory black hose container tube to make room for the 1 1/2" pipe. Next Mod is adding 5" fence post for black hose. I came off the rear gray water tank with a "T" thinking I would leave the rear drain attached if needed for some reason but it extended to low and I was afraid of it contacting the ground in extremes towing circumstances. I just used an expandable plug which will allow clean out if needed. Here is the list of items I used. Sorry for the the picture orientation, I couldn't get them rotated.

    Valterra T-80
    Slip Flange
    20ft of 1 1/2" ABS pipe
    (1) 3" x 1 1/2" "T"
    Several 90s
    Pipe Hangers
    Attached Thumbnails Attached Thumbnails Drain 1.jpg   Drain 2.jpg   Drain 3.jpg   Drain 4.jpg   Drain 5.jpg  

    2020 Reflection 320MKS
    2003 Silverado Duramax

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