Grey push fit circa 1998 - is this compatible with Polyplumb 10mm

[Rons1]

Changing rad and valves as rads rusty. the grey plastic 10mm pipe and fittings need to be cut short to fit the new 10mm trvs and valves can they be removed and replaced with current polyplumb 10mm 90 deg spigots as they have a metal ring that digs into the plastic pipe.
also the fitting end that went into the valves has had the O ring squeeze the metal insert out and they have to be cut short to fit into the replacement valves. any suggestions on replacements the Jg speed fit would be okay but the pipe through the wall appears to be damaged by the metal ring so may not be a good idea.?

 

[jeff the gasman]

Remove the plastic collar and slacken the backnut expose grab ring and snip it off. Fit new Polyplumb spigot elbow. Done.

 

[SandyLyon]

As above, replace fitting “like for like” so that the “O” ring sits on the same undamaged section of pipe, also give the fitting a pull back to make sure the teeth bite ok where the damaged pipe is.

 

[Rons1]

Thanks will try that, I only had the white pushfit ones on first few so left in place. and modified the stem