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

Simple to use- helps to pull overfill valve on can to relieve vapor for a full tank. Get a kitchen scale and weight tank- don't overfill!

Filled a bunch of small cylinders up from a big one following YouTube instructions. Worked great, easy to do and saved a lot of money!

Muy útil para ahorrar en cilindros

I haven't used it yet, however the construction is sturdy!

At my local big-box hardware store I am able to refill my 20 lbs. tank for approximately $20, thus $1 for a pound of propane. The same store sells six of the green 1 lb. gas cylinders for $60, thus $10 for a pound of propane, packaged more conveniently. This GASPRO refill adapter enables one to conveniently and safely refill the green 1 lb. bottles at one-tenth the price of purchasing new bottles. It is a no-brainer to use the adapter, particularly if one is a heavy user of the green bottles, as I was over the Thanksgiving holidays, when I had three going at once: one for boiling the water for coffee, a second for the camp stove cooking the bacon, and a third for the heater, as it was about 40 F. Over the four days I used 18 green bottles as it went below freezing each night.The adapter is easy to use. Simply thread one end onto the 20 lbs. tank, then thread the green cylinder onto the other end. Invert the 20 lbs. tank and open the valve to the 20 lbs. tank. One should be able to hear the hiss indicating that the green tank is filling.There are a number of instructional “how to” YouTube videos on this process. I found some contradictions. For example, one said that it is best to take the green gas cylinder from a freezer. Another swore that his kitchen scales indicated that there was no difference in the amount of propane transfer, between the freezer version and the room temperature version. Both however approved of the process.Not so a warning video from the Department of Transportation, saying it was (sorta) illegal to refill them, and not wise to boot. Looking at it closely, it appears to be an industry funded “scare” video. Sure, we should never refill around on open flame. And I strongly suspect that the purported thin walls of these tanks could withstand 500 refills, much like a Scuba diving tank.One issue that I did not see addressed: if one is refilling ten green cylinders or so, it might only take five minutes to fill from a 20 lbs. tank which is completely filled. By the 10th cylinder, it takes longer, and I found that one hour is better than a half an hour. I’m still working on refining the estimates for the length of time as a function of the fullness of the larger tank.For now, though, this adapter is a great way to save a bundle of money… perhaps enough to pay for the gasoline to drive to the campsite. Attached is a picture of the inverted 20 lbs. tank filling a green 1 lb. cylinder. 5-stars, plus.