I've got a few bottles kicking about, some with long tests on them, they've come off Max flo's etc. So I would like to get hold of some cheap pre-set regs so I can put them into service again. Prefer low pressure but high pressure will do if cheap enough. there must be unloved regs lying around from expired bottles 
(Don't worry, I know what I'm doing; I used to be a medical gas tech in a former life!)
(Don't worry, I know what I'm doing; I used to be a medical gas tech in a former life!)