What thread is this?

[Reg12]

Hi there, I am looking to get a reg for this cylinder but need to know if I'm looking for the right ones.

I think this is the type of reg I'm after? What is the thread called?

thanks for your help.

 

[penfold]

The thread looks like a 1/2" bsp, but it would be advisable to check that.

 

[Lawnmowerboy]

Stick a vernier/ruler across the sealing face and emasure the OD it it's judt a standard it should be 5/8" BSP and the reg in your link would be fine

 

[madkayaker]

What type of cylinder is it as it doesn't look like a co2 reg to me more like a dive tank?