AirForce Scuba Tank Adapter, DIN Connector

Great piece of equipment. Well made. Works great. Wish it had a slightly longer hose. Connector works perfectly. Very happy with it.

Pros
Well made. Easy to use.

Cons
Wish is had a slightly longer hose.

I use this adapter with a steel 100 cu. ft. 3500 psi scuba tank with a DIN valve. It's a great way to use a high-pressure scuba tank as a huge air source to fill PCP rifles or small pony tanks. I use it to fill my AirForce Texan and Condor, which each hold about 30 cubic inches, many times before the scuba tank pressure drops to 3000 psi. I usually refill the rifles when their pressure falls below 2000 psi, which takes about 15 cubic inches to bring them up to 3000 psi, including the hose-bleed loss. Taking the scuba tank from 3500 to 3000 psi represents about 14 cu. ft. or 24,000 cubic inches, or over 1000 rifle refills. The adapter is well-made, but could be improved (see the "cons" below). When screwed into the DIN valve of my tank, the gauge is oriented downward and inconvenient to read. This may be a function of the female DIN threads on scuba tanks not being standardized, but if so, the design of the adapter should accommodate that. With its fixed threads there is no way to index the adapter on the tank valve with the gauge where you want it - you screw it in and take what you get. Also, having no valve on the adapter means you can't use the gauge to determine the tank pressure before connecting the hose to something. These modifications would improve the product, but also likely add to the cost – which is already pricey considering the simplicity of the adapter. I downgraded my rating based on these minor gripes, and would recommend it to friends only with these caveats.

Pros
1. Works as advertised; the DIN connector is less likely to leak or blow out the o-ring than standard SCUBA K-valve yokes. 2. Has built-in pressure gauge. 3. Less expensive than similar adapters of other brands.

Cons
1. Hose is too short. A longer hose would make it more convenient to use. 2. Gauge orientation is not adjustable. The adapter's design does not allow the gauge to be oriented upright to be visible. 3. No valve. It's just a straight-through coupling with the tank valve being used to control the air flow. It would be more convenient to be able to check the tank pressure without having to connect the hose to a rifle or pony tank. 4. Pricey. For such a simple design I consider it to be over-priced. If it had the above three improvements the price would be about right.