The strong recommendation of all parties is to mount the regulator so that the hose rises continuously from the cylinder outlet to the regulator inlet.
Apparently gloop comes out the hose and then knackers the valve.
The techie guff is here if you wish to read it.
Link Removed
Apparently gloop comes out the hose and then knackers the valve.
The techie guff is here if you wish to read it.
Link Removed