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amakarevic 03-29-2010 11:30 AM

compression (?) fitting burst out of the blue
1 Attachment(s)
hey guys,

i was lucky to be at home and actually in the kitchen last night when a tee that splits hot water supply under my kitchen sink for the faucet and the DW just simply busted. not sure if the DW cycle just having completed may have had something to do with it, like forcing pressure back into it or something.

but here is the picture. basically, it looks like a copper T that feeds two plastic hoses. not sure if they are compression or held in place by the twisting of the nuts.

i am pretty versed at plumbing so i know i can repair this if you tell me if there is a more reliable solution to the problem than the existing and what this piece exactly is called that i need to replace? threaded connectors seem more reliable than this straight hose going in P.O.S. but not sure what it would take to replace the other end going into the DW. i am just scared of this happening again when nobody's home and having a huge flood and a water bill ...


Mike Swearingen 03-29-2010 01:41 PM

That appears to be a compression T and the little hoses should have brass inserts in the end of them to keep them from coming loose. A dishwasher valve will shut off instantly, creating back pressure, which is probably what happened.
I would replace those hoses with 3/8" stainless steel supply lines, one to the hot water faucet and a ss dishwasher supply line, both made for the separate purposes. (They both come in different lengths.)
They should screw right onto that same 3/8" T fitting I think.
Good Luck!

amakarevic 03-29-2010 01:48 PM

but that will involve taking the DW out of the housing to insert the other end of the SS hose, correct ?

Mike Swearingen 03-29-2010 02:43 PM

All that you have to do is to unscrew the screws of the dw anti-tip-out flange from the bottow edge of the countertop and it should just slide right out.
The other end of the dw supply line will just screw right onto a threaded fitting. The one on my dw is a threaded 90 degree fitting with one end screwed into the dw valve with the dw supply line screwed onto the other end of it. You may need to ask for that fitting when you get the dw supply line. You may want to measure for length first anyway, and see what you need.
Believe me, ss lines will be a LOT better than those plastic lines you have now. That stuff looks like a disaster waiting to happen.
Good luck!

rjniles 03-29-2010 04:32 PM


Originally Posted by amakarevic (Post 421293)
but that will involve taking the DW out of the housing to insert the other end of the SS hose, correct ?

You should be able to remove the toe kick cover and disconnect and reconnect the supply line to the DW.

amakarevic 03-29-2010 04:39 PM

currently, there is a hole under the sink through which the DW hose goes to the DW but there is a cabinet in between the two, so to disconnect it from the DW, i think i WILL have to take it out of the housing and then the real problem will be how to conduct the SS line through because i guess it is far harder and less pliable than this plastic crap. the previous owner of the house used it for rental and did not live in it, that is why everything in it is done el cheapo way, quick and dirty ... i hate doing things that way.

amakarevic 03-29-2010 04:41 PM

can i use a use that still has threading at the end (kind of like the toilet connector hose) instead of this POS ?? compression fittings are seems like the bane of the plumbing world ...

tpolk 03-29-2010 06:05 PM

all your supply lines are compr fit. as said take toe kick off washer, when you pull the old line out tape the new line to it and pull it thru at same time
they make braided metal supply lines that will have a male fit on each end, one for washer, one that will thread onto your t

bernieb 03-30-2010 11:29 AM

You keep those plastic supply lines . Your problem ls having brass or steel ferrels instead of having plastic ferrels. You see, after years of use the tight brass or steel ferrel will cut through the plastic tubing. Check every plastic to brass fitting in your house because the installer didn't know that.

amakarevic 03-31-2010 11:07 AM

1 Attachment(s)
Here is the fix. The P.O.S. plastic compression hoses have been replaced by a red threaded hose (DW) and the stainless steel pipe on the right for the faucet. Each having its own valve.

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