tallen84
New Member
I am installing a water softener and backwashing carbon filter on the outside of my house (inside a small shed). The nearest drain access is a drain clean-out about 15ft away that I would like to tie into for the backwash and salt brine.
I live in Houston, TX so while freezing isn't a regular occurrence I am trying to keep it reasonably safe from the occasional freeze and run the drain line underground. (See attached sketch). My questions:
1) Is this the best way to do it?
2) Will there be any issue running underground and popping back up as long as the clean-out is lower than the air gap fitting?
3) Do I need a separate P-trap above ground where I enter the clean-out or will the pipe underground service as one large P trap?
4) What size should I use for this drain line? Is 1" sufficient or do I need to go larger?
I live in Houston, TX so while freezing isn't a regular occurrence I am trying to keep it reasonably safe from the occasional freeze and run the drain line underground. (See attached sketch). My questions:
1) Is this the best way to do it?
2) Will there be any issue running underground and popping back up as long as the clean-out is lower than the air gap fitting?
3) Do I need a separate P-trap above ground where I enter the clean-out or will the pipe underground service as one large P trap?
4) What size should I use for this drain line? Is 1" sufficient or do I need to go larger?