Which insert for poly onto Peglar pushfit 90's

[1animal1]

As the title suggests - I am converting my rads to centre exit 10mm speedfit pipe, feeding into Peglar pushfit 90's which are mounted to the TRV. The question is which insert to use? I am using the basic inserts with no rubbers for the compression fitting but have both types in my toolbox...

I also gather that once the pipe is inserted into the 90's, its irretrievable? (not that it would need to come out.

Thanks

Tim

 

[AWheating]

Use the standard inserts