Oxygen bottle filling adapter - DIN477

Oxygen bottle transfill adapter - DIN477 threads are converted to a standard DIN232 (dive shop standard).

This new adapter allows dive shops and other UK retailers to refill oxygen into American Mountain High bottles with a DIN477 thread or a German Steel Bottle - many of which are built with a DIN477 thread. This adapter also has a 'pin insert' designed to press down the non-return valves found on many German Steel Oxygen bottles, to allow easy filling at dive shops.