zientm
New Member
I am planning on installing a backwash filter (neutralizer) and am looking for some advice on plumbing the drain. The unit will be installed in the basement and I would like to discharge the backwash into a storm water drain I have outside (maybe 4 feet above the filter and 10 feet away). My concern is making sure the pipe outside the house (and the first 18" inside) drain at the end of the backwash cycle to keep water in the pipe from freezing and damaging the pipe. I can make sure that I plumb that section of pipe at a downward angle, but am concerned about vacuum lock. Now, if this was outside plumbing, a vacuum breaker would do the trick, but I have not seen ones that do not discharge some water after a while and am concerned about any granular material in the discharge keeping the vent open and winding up with a mess. Also, since it would have to be mounted up between the joists, I would not be able to inspect the seals on it without completely removing it.
My "Plan B" is to rely on manually initiated backwashes (at least in the winter) and install a drain valve inside that I can use to drain/vent the pipe.
I would appreciate any advice on this.
My "Plan B" is to rely on manually initiated backwashes (at least in the winter) and install a drain valve inside that I can use to drain/vent the pipe.
I would appreciate any advice on this.