I was recently fitting some PRV,s (Changing single to dual style manifolds)
and decided to use ptfe instead of loctite as it is more forgiving.
Meaning the slightest movement when changing a prv and you have a leaking manifold. ( which is a gas out job!)
Something in the back of my mind says that there are certain refrigerants that it's not recommended.
To use ptfe does anyone know whether this is true?
And if so which ones are a no no!
Grizzly