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?
It is called a "trap primer". The hose is supposed to feed a
small amount of water to the drain in order to keep the trap filled
More info here:
for: "trap primer"
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