gas reg fitting?

[DEMPSEY]

I have these 2 gas reg's that came out of a pub cellar but the connection's are such that I have never seen what they connect to. The reg's are sealed and pre set at a given pressure. Any idea's,

[DEMPSEY]

Bumping this,has anyone got a link to where I could have this crappy gas connector replaced with a connector for a mixed gas bottle. The reg's appear to be fine.

[alealex]

What way is the high pressure hose connected to regulator? I might have a spare one with fine thread going into regulator and standard gas cylinder fitting.

[DEMPSEY]

Alealex,this is the gas connection to the reg,I want to change from this odd looking fitting to a mixed gas fitting for a mixed gas pub bottle.

[alealex]

Diameter of thread going into reg: 9,9mm - 8,7mm (15mm spanner)
diameter of gas cylinder thread: 22,5mm - 20,5mm (28mm spanner)
Hope it's the one you're looking for.

[DEMPSEY]

Not too clear on the picture but is the connection to the reg a male fitting.

[alealex]

Yes, male fitting.