DIN adapter with quick-disconnect nipple that mates with our booster and transfill deluxe hose kits. The bidirectional pressure bleed is a rotating collar on the stem, so there is no bleed screw to lose. The DIN fitting with the handwheel is machined as a single piece from aircraft aluminum (the same stuff aluminum scuba tanks are made of) that has been anodized a dark black color.

Our booster and transfill deluxe hose kits already include one of these, but if you are a blender who wants to maximize your supply and minimize fill times then you are cascade filling using several supply cylinders. Having an additional fitting with a quick disconnect on each supply cylinder makes cascading easier by enabling the rapid movement of the supply side hose from one bottle to the next in your cascade.