I plan to move a lavatory into a small closet that is above a closet in my
rental unit. So I figured I'd give the floor a lead pan and drain. The
drain should always be dry. Reading an article in Consumer Reports I see
they recommend a trap primer to divert a dribble of water from the supply
line to the drain to keep the trap full. That seems like a waste of water.
I had been thinking that some sort of check value would be available that I
could use to keep the sewer gases from getting out. Is a trap primer the
Don <www.donwiss.com> (e-mail link at home page bottom).
They have an electronic one.
Or, make one using a solenoid valve and timer.
Or it can be triggered by, say, a faucet opening.
One could even use the toilet tank refill (caution here;
improper connection could create a health hazard.)
looks like it will work..but it takes a while for a trap to dry out....if
you start to smell sewer gas just pour a cup of water down the drain.A trap
primer lets out a little "very very little" dribble of water every time a
valve is opened and closed on the same supply line that the primer is
attached to.It is not like a leaking faucet that runs all the time.
Plumbers, Pipefitters, and Service Technicians local 72
card number 1465687
Its not just sewer gases that you need to keep out, but sewer vermin as
well. Get a gallon of RV winterizer and pour a cupful or so down the
drain every few weeks/months. It won't evaporate and unless you have a
siphon, it won't get pulled out of the trap either.
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