GASPRO Propane Refill Adapter, Fill 1 Pound Bottles from 20lb Tank, Easy to Use, Solid Brass

I was sick of buying the disposable small cans because they're expensive and I feel guilty about the waste involved with the cans. I bought some top name brand refillable cans. And I bought this device because it was simple a good price. There are more fancy devices with gauges and whatnot, but I've been very happy with this device. What I do is fill my large gas tank with gas at the service station, and bring it home. Then I place my large gas tank sideways on the edge of a chair with foam holding it steady. I attached this device, then my refillable small can. I open the large can valve and fill unto the overflow on the small can starts leaking gas (then I know it's full). It fills pretty quickly so be ready. I like to weigh my small can beforehand with a kitchen scale, then afterwards to see how much gas is in there. I think the build quality is good (I'm an engineer), the screw fittings are standard size and don't leak, and I like that it is simple; I've found that pressure gauges often fail on small devices so didn't want to pay extra for that and end up being disappointed in the future. I'm saving tons of money using this device, it paid for itself after a few fills and no more disposable cans in a landfill. NOTE: I realize that some people refill the disposable cannisters, but they are not safety-rated to be refilled. Just for your own peace of mind and safety, buy a couple reputable refillable cans, you'll still save plenty of money in the long run. I've seen one of these single use cans explode while camping, my friend singed one of his eyebrows off and melted his fleece jacket.

Awesome for filling the small camp tanks. Saves a lot of money. If you don’t know, if you put the small tanks in the freezer before filling you are able to more thoroughly fill the tanks

Very easy to connect, both to the 20-lb tank and to the small bottle to be refilled. However, I does not seal to all 20-lb tanks. (My tank must be 'old style' and it really leaks when I try to refill a little bottle.) I tested on several tanks a friend has. It works great on some tanks, but leaks on some. The O-ring/sealing system on the tank valves seems to have varied through the years. This refill adapter is a good deal -- quality made and fair price -- if you have the right kind of valve/seal on your 20-lb tank. I am not sorry I bought it; I will make sure what valves/seals are on future propane tanks I buy.

After I bought this I bought one of those $20 ones with the pressure Guage. I only use this little guy it's awesome . For the money you can't beat it .

I want to start by saying that this works exactly as it should. But there are some things that should be considered for it to be effective and/or safe.Most people aren't going to store a tank in the freezer and another in heat before starting as this listing implies. Maybe that works but I didn't do it and, as others have mentioned, you need to release pressure from the small tank to allow propane to flow into it from the larger tank. The issue is that you can overfill your tank as I did the first time.I have 4 small tanks. 2 were empty and 2 are brand new. I weighed my new tanks and both weighed 1 lb 14.9 - 15 oz. After releasing pressure from one of my used tanks and filling it with this adapter, I weighed it and it was 2 lbs 4 oz. It was so full that when I shook it, I couldn't hear anything move inside. Propane expands when it heats up so it could have very well exploded if left in a hot car or some other circumstance.So I decided to release some propane. I first used a straw from a WD40 can but it immediately froze my fingers as it spewed out (it's extremely cold). I ultimately used this tool (removed from the larger tank) and screwed it into the little tank until the valve was depressed enough for it to emit propane. I repeatedly released and checked the weight until it weighed 1 lb 14.9 oz. For my 2nd tank, I released less pressure initially so it didn't accept as much propane. Several times, I released pressure, added more from the large tank, and weighed it until it reached full capacity.In short, this thing works great but should be used with caution. Weigh it as you fill it or you risk an explosion with damage to property and potentially injuries/death. Also, only do this outdoors, away from open flames. Some propane will escape as you're disconnecting and releasing pressure. Propane is heavier than air so it will fall to the floor and could ignite.I have now labeled each of my small tanks with the expected weight so the next time I fill them, there will be no question how much it should weigh when filled.

Works perfectly