Repairing MLCP pipe without pressure too

[andyscotland]

Called out by my mother in law this weekend to no heat in her system. Discovered system was emptying as fast (faster) as the header tank could fill.

 

After an awkward wriggle under the floor, I discovered the original "plumber" has made no attempt to crimp the connection on this elbow onto the pipe to the  external drain down valve (at basically the lowest point in the system 😱) and it has evidently decided this weekend to move a bit and turn from a slow leak to a fast one. By my calc I think we've lost at least 200L of water under the floor since yesterday. God knows how much since this was done a few years ago.

 

 

 

I do not own/have access to a press tool for this connector. I am not at all convinced I'll find a plumber willing to wriggle the extremely tight subfloor route to get to it.

 

Any ideas? If I cut the pipe immediately above the elbow is there a compression elbow I could use instead?

 

Pipe has no manufacturer listed afaics, printing says "005m UFH MULTILAYER PE-RT/AL/PE-RT butt-welded PIPE TYPE I 16x2.0mm T=85°C P=10bar ISO 21003 CLASS 2/10bar,5/10bar 04:31:43 10/09/2019".

 

Argh!!!

 

No wonder my own project is years behind schedule  constantly having to fix up after "pros" elsewhere 🤬

[Nickfromwales]

You can cut the T out and revert to compression 16mm fittings to connect this lot back up.

 

You use 15mm comp joints but they have 16mm nuts / inserts / olives to adapt from 15>16mm. A lot of decent merchants carry these nowadays if you just ring around. 
 

Not sure how much pipe drops out of the T so hard to advise. Can you take that bit of insulation off to show what ‘we’re’ working with?