You don't ---- that is the way it is supposed to work to keep your basement
drain trap filled with water to keep stinking sewer gas from coming into
your house.

"YesBalala" wrote in message
...
My laundary faucets has a valve at the back which got a small plastic
pipe leading into the drainage pine in the basement. Recently,
whenever I turn on the water tap of the faucet, water coming out
normally (from the tap) as well as from that small pipe. Any idea why
and how can I fix it?