Originally Posted by kaiaua
I have two copper tubes about a foot apart relieving though the floor under the kitchen sink. The aft of the two is dripping what seems to be water, but I cannot track its source inside the base cabinet. Any ideas where this back one comes from? THNX!
Those 2 pipes are for drains.
The valves for those drains are immediately above the floor and could be somewhat recessed.
One of the drains is for the water line and the other should be for the water tank.
However, there have been some installations where one valve drains the cold water line and the other valve drains the hot water line. In that case, the water tank has it's own small drain valve.