How to separate a rubber-ended hose from a gas regulator/connector?

[abdulbadii]

TL;DR Summary

Definitive and correct way to apart/separate a rubber-ended hose with the gas regulator/connector

Anyone outright experience or understand tips and tricks to apart/separate a rubber-ended hose with the gas regulator/connector (as the right pipe mouth below but sorry no rubber-end hose pic) ?

It indeed so hard
so any clear idea, with keep everything intact unbroken on mind, how to do and by help of which suitable liquid ?

 

[Baluncore]

The serrated fitting on the RHS is called a hose barb. You can push a rubber hose onto the barb, because a hose expands when under axial compression. When you pull the hose to remove it, the hose contracts onto the barb and holds on tight.

To remove a hose from a barb, use a couple of thin blades to press against the cut end of the rubber hose. You can then push the hose off because the hose will expand under axial compression.

If the rubber is hard, you can heat it with boiling water to soften it.

If the rubber is bonded to the barb, hold the rubber on the barb with pliers, then rotate the rubber tube on the barb to break the bond.

 

[Rive]

I don't know the relevant local recommendations and regulations, but here this kind of disconnection is not recommended any more for gas pipes. If the pipe is to be removed then destructive methods are preferred, so it could not be reconnected again: when a new connection is to be made, then all fresh is the way.
And if it's about appliances, then all new and factory made.

Yeah, I do know that if done with care it works. We did it that way back too. Just adding my piece.

 

[Lnewqban]

Please, see:
https://theboatgalley.com/exceedingly-helpful-tool-our-hose-puller/

https://koultools.com/remove-push-lock-hose/