Germany
Adapter Air (5/8") -- inert gas (W21.8) inside / inside
Adapter for oxygen to normal air, extanded threads
filling and removing adapter for oxygen / air; to fill nitrox tanks with oxygen valve.
Brass stopper for compressed air G5 / 8 "with O-ring pressure-resistant 200bar, hexagon with key width 30mm
Filling adapter for nitrogen according to DIN477-10 for filling nitrogen cylinders with valves that have a flow-off protection / residual pressure valve. Residual pressure valves work similar to check valves and must be actuated to refill the gas cylinder.