Re: plumbing vent
If I'm following your description --- you want to place the vent line on the discharge part of the drain?
Originally Posted by larry27mny
If so -- no that's not where it should be. The vent is to provide air behind water --- a vacuum break --- at the fixture. Think of placing a straw in a glass of water--- cover the top of the straw with a finger and remove the straw ---- water that has filled the straw will stay inside until you remove your finger on the top of the straw ---- allowing air to push the water out --- air behind water ( vacuum break ) which is the same principal as your home drain system.
A cheater may work for your situation since it sounds as though your gray water is not part of the septic system.
"" an ounce of perception -- a pound of obscure "