Review on G-WORKS Gas Saver Plus with Lindal Valve Canister Shifter, Refill Adapter, and Air Vent Function by Justin Elmore

Connection valve seems to be well made. I had no trouble connecting to either site. Following the instructions, I was able to fill an almost empty small canister (120g) from a large canister. It took more than one try as the pressure differential decreased. From the first time it turned out 180gr. At the second gas station I was lucky and stopped at 212g. It's usually sold full at 210g so yes it works. That means I halve the cost of future gas usage. With about 13 fillings, the valve would have paid for itself. Cute!