correcting mains water leak

Jim79

i have a mains water leak and i need to replace the copper t junction. i have bought a device similar to this. http://www.plumbingproducts.ie/philmac-tees-ireland/3538-philmac-normal-gauge-tee-pol-x-pol-1.html.
the existing water hose into the t junction has a copper ring around it. does this copper have to be removed or can i just attach the new t junction

Sleeper12

Can you post a photo or 2 please

Avns1s

Jim79 wrote: »

i have a mains water leak and i need to replace the copper t junction. i have bought a device similar to this. http://www.plumbingproducts.ie/philmac-tees-ireland/3538-philmac-normal-gauge-tee-pol-x-pol-1.html.
the existing water hose into the t junction has a copper ring around it. does this copper have to be removed or can i just attach the new t junction

I presume its the compression ring you're referring to. If it is, then you will have to remove it.

Calahonda52

op picture is important as you are saying copper twice and it may be brass and copper or brass and brass so.....

Jim79

so i removed the metal one and placed on the plastic one. but its not a good fit and its leaking worse than the one that was removed. the metal ring is still around the black hose.

the hose is 3/4 inch diameter and the device i bought is a M-I TEE POLxPOL 25/3/4"

Calahonda52

What was wrong with the original, leaking maybe but what else.?
what caused the leak?
Are the olives damaged or are there scratches on the plastic that allow the water too leak under the olives
You have no room to redo the pipes here as everything is very short.
You need to go back to the 3/4 inch instantor compression fitting, get some jointing compound for potable water, remove the plastic fitting and clean everything up, put the compound on the brass olive that remains on the plastic pipes and tighten everything up, not over tight, just enough to stop the leaf.

The front face of the olive is what makes the seal against the fitting, the compression is done by the nuts that are still on the pipes.
A bit of compound on the threads will help with the tightening but add noting to the actual sealing

K.Flyer

Jim79 wrote: »

so i removed the metal one and placed on the plastic one. but its not a good fit and its leaking worse than the one that was removed. the metal ring is still around the black hose.

the hose is 3/4 inch diameter and the device i bought is a M-I TEE POLxPOL 25/3/4"

Sorry, but that is the totally wrong way to do it!

Go to a plumbing supplier and buy a 3/4" equal compression T (3/4" 318) and a roll of Gas PTFE tape.
Remove and discard that plastic T.
Wind about 2 - 3 wraps of the PTFE tape around each of the rings that are on the ends of the pipe.
Remove nuts and rings from the new brass T and set them aside.
Connect your three pipes with existing nuts and rings (rings now have tape on them) to the new brass T and tighten up using appropriate tools.
Turn on water and check for any leakage.

Jim79

the leak is coming through the nut where it makes contact with the pipe. i began by adding the ptfe tape around the olive and tightening the nut. this reduced the leak but did not stop it.

Calahonda52

Any sign of damage to the olive or the curved face of the fitting where the olive seats or scratch marks on the pipe
Any dirt in the fitting that is stopping olive from seating

K.Flyer

Try it with a new brass T fitting and use gas tape (its a heavier grade) as I described.
Because the pipes are buried you need to avoid cutting them if possibile.

Jim79

there is a hole in the bolt u may be able to see some of the red of the glove. thats where the gap is

Jim79

Calahonda52 wrote: »

Any sign of damage to the olive or the curved face of the fitting where the olive seats or scratch marks on the pipe
Any dirt in the fitting that is stopping olive from seating

the only problem i can see is the hole in the bolt

Sleeper12

Hard to tell from that photo but is the gas tape on the correct side of the olive? Gas tape doesn't go on the side of the nut. It goes on the side of the brass fitting.

Jim79

K.Flyer wrote: »

Connect your three pipes with existing nuts and rings (rings now have tape on them) to the new brass T and tighten up using appropriate tools.
Turn on water and check for any leakage.

since there is a hole in the bolt, does this change your advice?

Jim79

Sleeper12 wrote: »

Hard to tell from that photo but is the gas tape on the correct side of the olive? Gas tape doesn't go on the side of the nut. It goes on the side of the brass fitting.

i put it around the olive to try and stop the wash of water shooting back through the hole in the nut

Jim79

photo showing the ptfe tape distribution

K.Flyer

That looks like the ring is too close to the end of the pipe. Is the ring moving on the pipe?
Tape goes on the ring where it makes contact with the connection.

Sleeper12

That pipe is cut very short. The tape should be around the olive (on the left hand side of the olive looking at the photo head on.) You might not get this one fixed without more fittings and cutting some pipe out & adding pipe.

Jim79

K.Flyer wrote: »

That looks like the ring is too close to the end of the pipe. Is the ring moving on the pipe?
Tape goes on the ring where it makes contact with the connection.

no the ring is stationary

Calahonda52

Sleeper12 wrote: »

That pipe is cut very short. The tape should be around the olive (on the left hand side of the olive looking at the photo head on.) You might not get this one fixed without more fittings and cutting some pipe out & adding pipe.

I agree, it looks a mess.