Filling pony bottles from main tank

[Searcaigh]

This is what I use

Dive Cylinders | Scuba Tank Accessories (dirdirect.com)

 

[jmcgilroy]

incorrect. they make 6cf tanks that use a standard valve. i have one. your "spare air" is a different animal.
also, the restriction orifice on the high side is on the hose, not the valve.

Is this a restricted orifice?

 

[Couv]

Yes, like all first stage hp ports (I say all as I've never seen otherwise.) But no matter. You can easily get 40 cu ft through there in 15 minutes.

Pushing gas with a high O2 percentage quickly through that hole is probably not a good idea though.

 

[rick00001967]

View attachment 663262

Is this a restricted orifice?

well aint that somethin'. i stand corrected. learned something new today. thx.