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Old 03-07-2011, 07:42 PM   #1
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Laundry Room Tap surprise!?


I want to thank everyone ahead of time as I have been a long time lurker. (as long as that doesn't sound too creepy) I have always found plenty of constructive answers to many of my questions on this forum.

As my first post, I was not sure how to phrase the question for the information I needed in the "search" feature.

I was going to install new taps in a laundry tub today and found that not only did it have the hot and cold water lines to the taps, but also a clear 3/8 plastic hose that ran to the center faucet. This drained down into the basement sewage run. When you turned on the taps some of the water not only left the faucet but also went into the waste system. What function does this serve?

The reason this was originally noticed was that the taps where not sealing completely and you could hear the water running but it was not coming out of the faucet.

This may be common knowledge to some of you, but I sure would appreciate knowing.

Thanks

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Old 03-08-2011, 01:13 AM   #2
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Laundry Room Tap surprise!?


This is new to me too. Thats one thing about this forum- always something to learn.
I googled "faucet with a primer". Appears you have a trap primmer built into your faucet. Its designed to give a trap a shot of water so the trap doesn't dry out and allow sewer gas into your home. Does this tube drain to a floor drain or other trapped drain?

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Old 03-08-2011, 01:28 AM   #3
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Laundry Room Tap surprise!?


I've heard of this faucet design. It was made for sinks that were seldom used and the line was to dribble feed the trap so it wouldn't dry out. It's not much different to dribble feeds for the drain traps for hot water tanks.
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Old 03-08-2011, 08:49 AM   #4
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Laundry Room Tap surprise!?


Thanks guys for the help. This makes sence, but I have never seen one before. I may check to see if this is common with the rest of the houses in the subdivision. The house is about 20 years old.

Now I'm not sure whether I should reinstall with new taps or just leave it out.

Plenty of water going down into the basement sewage line with a family of 4.
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Old 03-08-2011, 09:05 AM   #5
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Laundry Room Tap surprise!?


You can replace it with a standard faucet set if you wish.

If you use this sink frequently then you don't need the trap filler.
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Old 03-08-2011, 09:24 AM   #6
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Thanks Allen, makes my decision so much easier!
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Old 03-09-2011, 11:13 AM   #7
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Laundry Room Tap surprise!?


This is probably the trap primer for the floor drain in the laundry room and installing the new taps may cause a problem with the trap on the floor drain drying out.
With traps that very rarely see water, there are oils available to dump into the trap, the oil does not evaporate and will keep the seal indefinitely. If water does happen to enter the trap, the oil will always float to the top, maintaining the seal.
In the past I have used glycerine, but there are commercial oils available (used in waterless urinals) that are environmentally friendly and slightly scented.
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Old 03-09-2011, 11:38 AM   #8
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Laundry Room Tap surprise!?


Quote:
Plenty of water going down into the basement sewage line with a family of 4.
I'm curious what you mean by sewage line. Do you mean a floor drain?

If it's somehow tapped into the "sewage line", I would be concerned about cross contamination to the potable water system.

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