The nozzle on the Parasene torch slides off after the screw on top of the burner is undone.
The nozzle has to be removed for our purpose, otherwise the burner nozzle will deliver a gas and air mixture.
No need to use the plastic tube from the Protectan spray.
Gas flow controlled from the black cone shaped tap handle already on the torch.
If you feel you really must have a long nozzle/tube to deliver the gas into the bottle a piece of heat shrink tubing place over the jet nozzle will be ideal.
If you do not feel happy or confident doing this simple modification, be safe and leave well alone.
WARNING, Never trust a gas fitter that has no eyebrows.