Washing machine feed damaged

TheBully

Iv a damaged feed under my kitchen tiles over to my washing machine, it’s a 15mm qualpex pipe with a fairly large pinhole, I have it knocked off via a penny valve under the sink, my plan is to cut out the damaged section and put in a straight through coupler, bag it, cement it and retile it.
I’m just looking for recommendations on the best type of coupler to use, I’m thinking a compression coupler as seen in link

https://www.ie.screwfix.com/pegler-prestex-px40-straight-compression-coupling-15mm.html

I’m looking for most reliable as don’t want to have to come back to the joint. And another question is a brass olive required with above coupler when using qualpex.
Thanks guys

agusta

Where is the washing machine in relation to the sink?.Can you put a new pipe above ground under the kitchen units?
If buying a brass 310 fitting,the olive will come with it.you will need 2 pipe inserts too.you probably need 1/2" 310,not 15mm 310

J.R.

TheBully wrote: »

Iv a damaged feed under my kitchen tiles over to my washing machine, it’s a 15mm qualpex pipe with a fairly large pinhole, I have it knocked off via a penny valve under the sink, my plan is to cut out the damaged section and put in a straight through coupler, bag it, cement it and retile it.
I’m just looking for recommendations on the best type of coupler to use, I’m thinking a compression coupler as seen in link

https://www.ie.screwfix.com/pegler-prestex-px40-straight-compression-coupling-15mm.html

I’m looking for most reliable as don’t want to have to come back to the joint. And another question is a brass olive required with above coupler when using qualpex.
Thanks guys

If under tiles - when you cut out the damaged part it may be very tight to get the two pipe ends into new fitting...especially if there is no give - if pipe cemented down.
You could use one of these - longer so gives more flexibility





https://www.ie.screwfix.com/compression-repair-fitting-15-x-100mm.html

TECH85

You could feed a 10mm through the 1/2" qualpex .
Save having to rip up and then patch floors after..

TheBully

TECH85 wrote: »

You could feed a 10mm through the 1/2" qualpex .
Save having to rip up and then patch floors after..

Great idea, it’s a 10m run though so could be fairly hard squeeze through, it runs under the tiles under the kitchen cabinet for about half the run then crosses the kitchen to the utility.
If I thought I could get a 10mm qualpex through that would save so much hassle as I don’t have any spare tiles and would save all the messing.

TheBully

J.R. wrote: »

If under tiles - when you cut out the damaged part it may be very tight to get the two pipe ends into new fitting...especially if there is no give - if pipe cemented down.
You could use one of these - longer so gives more flexibility





https://www.ie.screwfix.com/compression-repair-fitting-15-x-100mm.html

That does look the job as I have an awful feeling it will be tight

TheBully

agusta wrote: »

Where is the washing machine in relation to the sink?.Can you put a new pipe above ground under the kitchen units?
If buying a brass 310 fitting,the olive will come with it.you will need 2 pipe inserts too.you probably need 1/2" 310,not 15mm 310

Pipe inserts? Are the fittings above not push on and tighten?
Prob a silly question but I’m not a plumber I’m a spark

jack of all

TheBully wrote: »

Pipe inserts? Are the fittings above not push on and tighten?
Prob a silly question but I’m not a plumber I’m a spark

No, compression fittings need inserts and should not be overtightened either or you'll risk a weeping joint. While running a 10mm pipe through the existing pipe sounds like a good idea be careful: some of the newer machines are very sensitive to water pressure/ volumes available, even if the current machine is ok the next one might have problems with reduced flow.

TheBully

jack of all wrote: »

No, compression fittings need inserts and should not be overtightened either or you'll risk a weeping joint. While running a 10mm pipe through the existing pipe sounds like a good idea be careful: some of the newer machines are very sensitive to water pressure/ volumes available, even if the current machine is ok the next one might have problems with reduced flow.

Thanks for that, learn something new everyday. Decision to be made so, I’m still leaning towards putting the 10mm through but think it might fail to push through so I’m gonna order the few bits to do the joint and go with that if option one fails.

agusta

You absolutely need inserts with qualpex pipe
https://www.goodwins.ie/products/Qualpex-Inserts-1-2-inch.html

You push fit it into the bore of the pipe

TheBully

agusta wrote: »

You absolutely need inserts with qualpex pipe
https://www.goodwins.ie/products/Qualpex-Inserts-1-2-inch.html

You push fit it into the bore of the pipe

Thank you, I’ll order the few bits now

agusta

TheBully wrote: »

Thank you, I’ll order the few bits now

Is your house a bungalow or two story

1874

Can you not disconnect this pipe at both ends and run a new pipe hidden above ground?

TheBully

agusta wrote: »

Is your house a bungalow or two story

It’s a 2 story semi d

TheBully

1874 wrote: »

Can you not disconnect this pipe at both ends and run a new pipe hidden above ground?

Not possible as it runs across kitchen floor into a utility

Wearb

Can you drop down a new pipe from above?

TheBully

Wearb wrote: »

Can you drop down a new pipe from above?

Not really, there is a second pipe there for a hot water feed which I presume is coming from hot press. Could I do a job with this and get a mains supply onto it from hot press?

dathi

https://www.diy.com/departments/flexible-pipe-connector-dia-15mm-dia-15mm-l-300mm/243591_BQ.prd
some thing like this if the pipe has very little play in it?