2airishuman
Contributor
I found some old threads on this but I think I've found a simpler solution.
I went to the closest custom hydraulic hose service, and asked for a hose meeting these specifications:
- 24" overall length
- 3500 PSI or higher working pressure
- 1/4" NPT end with swivel
- SAE ORB #4 end, no swivel (7/16" UNF with o-ring)
- Smallest hose diameter that is in stock (smaller hoses are more flexible)
The NAPA auto parts store closest to me makes custom hoses. They had all the fittings in stock and used 1/4" hose, and cut and crimped it in a minute or two after they made sure everything was the way I wanted it.
Then I got a non-swivel DIN to 1/4" npt adapter for $10 and assembled it to the hose with teflon tape. The DIN adapters available on eBay and Amazon. They work fine but require either really strong hands or a wrench to tighten enough to seal, since there's no handwheel. It is important to have a swivel on the hose end with this style DIN adapter.
The whole thing is small and light, and fits into one of the HP ports on my first stage. Equalization times are a couple of minutes. It isn't intended for oxygen, but works fine for air.
I went to the closest custom hydraulic hose service, and asked for a hose meeting these specifications:
- 24" overall length
- 3500 PSI or higher working pressure
- 1/4" NPT end with swivel
- SAE ORB #4 end, no swivel (7/16" UNF with o-ring)
- Smallest hose diameter that is in stock (smaller hoses are more flexible)
The NAPA auto parts store closest to me makes custom hoses. They had all the fittings in stock and used 1/4" hose, and cut and crimped it in a minute or two after they made sure everything was the way I wanted it.
Then I got a non-swivel DIN to 1/4" npt adapter for $10 and assembled it to the hose with teflon tape. The DIN adapters available on eBay and Amazon. They work fine but require either really strong hands or a wrench to tighten enough to seal, since there's no handwheel. It is important to have a swivel on the hose end with this style DIN adapter.
The whole thing is small and light, and fits into one of the HP ports on my first stage. Equalization times are a couple of minutes. It isn't intended for oxygen, but works fine for air.
