x-press fittings

[Biggles..]

did some re-work ona 54mm copper riser at the weekend and the firm that fitted it had used the above fittings. We came across one fitting that was not tight and weeping.

I've read the specs and they seeem to be ok, slgihtly expensive but quick and clean to install.

My question is does anyone here use them and can they be re-crimped if they're not tight or are they one shot only.

 

[doitall]

They never leak so there must be a problem with the pipe (dent ) or the fitting ring is damaged when assembled.

Could also be the pipe hasn't been pushed home prior to crimping.

Take the pressure off and re-crimp, but don't hold your breath.

 

[Balenza]

Have never used them nor am I likely to. On a pipe that size I would just braze it .

 

[doitall]

Have never used them nor am I likely to. On a pipe that size I would just braze it .

And if its a listed building or Church

 

[Balenza]

Diyitall wrote

They never leak

Yet the OP has one leaking.

 

[doitall]

Diyitall wrote

They never leak

Yet the OP has one leaking.

Yep this is true clever clogs, and I told him why.

 

[Balenza]

Have never used them nor am I likely to. On a pipe that size I would just braze it .

And if its a listed building or Church

Id still braze it if I had my way. Just have your fire extinguisher beside you, fire blanket, bucket of water and wet rags to moisten danger areas and an assistant.
And a hot line to the local fire brigade.

 

[Biggles..]

it leaks john or it did till we cut it out and re made it.

The fitting was all the way on but loose. there was a clear movement in the pipe which surprised me but the crimp was full and intact.

 

[doitall]

Have never used them nor am I likely to. On a pipe that size I would just braze it .

And if its a listed building or Church

Id still braze it if I had my way. Just have your fire extinguisher beside you, fire blanket, bucket of water and wet rags to moisten danger areas and an assistant.
And a hot line to the local fire brigade.

No hot works allowed, under any conditions since Windsor

 

[doitall]

it leaks john or it did till we cut it out and re made it.

The fitting was all the way on but loose. there was a clear movement in the pipe which surprised me but the crimp was full and intact.

Damaged O ring

 

[Balenza]

I thought that was an electrically caused fire ?.

 

[Biggles..]

Could only be i suppose. it was nice job,CWS and boostsr set in basement and 35mm feed to each office block floor off of the 54mm.Reduced down further in each bathroom and toilet block.

Could be tempted to try it on our next heating job altough i still like me iron.

 

[Al-Glasgow]

The crimpers i have used are Nu-Press, you might be familiar with them, anyway the more modern versions actually let you know by green/red light to indicate good/bad crimp.

For example i have been using the older orange Nu-Press unit (does not indicate if failed crimp), now more recently using the modern version it started to fail on 42,54,67mm fittings.

It turned out that the unit requires 3.3kva/110v, so the little 2.5kva tranny wasnt upto the job.

hope this might help.

Alan

 

[doitall]

I thought that was an electrically caused fire ?.

halogen lamp actually that was left on and set fire to a tapestry