Flame KingRefillable 1lb Empty Propane Cylinder Tank - Reusable - Safe and Legal Refill Option - DOT Compliant-16.4 oz (4-Pack)

So far, so good--they seem to be of high quality. The hex nut "relief" valve really helps in reliably filling these tanks to full, not under- or over-filling in a reasonable time per tank. I do weigh them empty and then afterward. They are like miniature versions of the 5 gal (10 lb) grill tanks in having the relief valve which serves as a fill indicator. It is very difficult to get the "disposable" tanks refilled to the proper level--it is too easy to under- or overshoot the filling of the disposable tanks, and then spend too much time getting them properly leveled.The information bullets include the statement "It is not safe or legal to refill and transport disposable 1lb tanks." It is not illegal, so the statement is false. Also, many people do safely refill the disposable tanks, so that part of the claim should be better qualified with statistical data. Almost no human act is "100% guaranteed safe." I choose the Flame King refillable tanks for the reliable and predictable fill leveling. (I did refill disposable tanks, but found it inconvenient.)The packaging warns that these should be used indoors. This would seem to identically say one should not use them in a Mr. Heater situated in a house or garage. The user of such a heater must make their own choice.I have not owned them for long enough to rate "durability." I also did not rate "value for money" for the same reason. They will need to be durable to have value for money because they are not cheap.

These are refillable though not always exchangeable, however refillable with an adapter that fits on a larger tank. These are easy to fill & useful for camping stoves, heaters & more safe activities. They have the overflow valve on the brass attachment instead of on the tank or bottle itself. They come with the key to fill, bleed off air and a plastic cover for easy carry when not in use.

These have been a long time coming. My Dad devised a refill mechanism for the standard Bernz-O-Matic torch propane tanks in the 1950s. He had realized the expense and waste in non reuseable tanks from the beginning. The largest hurdle in refilling the "disposable" tanks was the inability to vent the tank while refilling. That problem is solved with these tanks that include the ability to vent the tank when refilling. The tanks come with the necessary Alenn wrench to operate the relief valve. Due to size they are east to lose so I used an appropriately sized zip tie to secure them to the tanks. These tanks save me repeated trips to get tanks refilled and are a great cost savings!!

They save money. 20lb propane tank to refill cost approximately $19.00. I can refill safely 19-1lb propane bottles with that. (You need to buy the filler adapter too.) the Green 1lb bottles in my area cost $5.00. It was clear to me that in the short run I would save money.It is true that you have to buy the 20 lb tank if you don't have one yet and that is pretty expensive. $58.00 around here.I have to say that I was a bit concerned about the danger. I found it easy and safe for me to refill the bottle on my own. I am very happy with this purchase.

These appear solidly built, however, the filler attachment has a proprietary plastic piece that is breakable and risks rendering the refilling operation a failure.

Local propane supplier could not fill a small tank.

it’s about time they came back on the market I guess after a scare or after a recall it took them months to get these back on the market. I love them they refill good as long as you have the adapters able to do it they refill fine you just bleed it off with a little Allen wrench filled to capacity and screw Amanda whatever you’re going to use them on highly recommend these tanks much cheaper refill them off of a 5 pound containers in the by the ones from Walmart

As far as I know these are the only refillable propane cylinders certified by the DOT for transport. This is especially important when traveling at different altitudes. Regular propane cylinders are not designed to be refilled so they're not designed with the proper specifications. These have thicker walls, better seals and pressure valves. If you want to save money by refilling cylinders used for camping, hiking, etc., then these are the cylinders you want. Ordinary cylinders can be refilled but you take the chance of the seals leaking and losing the gas. That's not something I want to happen, especially if it's being transported inside of a vehicle. And who wants to arrive at their destination only to find out the gas leaked out. Get these and lesson the chances of that happening.

As described