Refill Disposable Propane Tank from a Standard BBQ Cylinder

Step 7 Do the refill process

To do the refill process, do those steps :

#1 Plug the refill adapter on the big tank FIRST

#2 Screw the little thank on the adapter.

#3 Flip the tank over like on the picture.

#4 Open the valve. The instruction say to let in open for 1 minute but you will hear the flow of propane stop after 30-40 seconds. When the sound of the flow stop, close the valve.

#5 Flip over again the big tank and remove the little one of the adapter. Some propane will escape from the adapter during this process.

Repeat the operation until you have filled all of your tanks.

Comments

[pmally]

you know there's a little shrader valve in the side of most of thoes tanks so you can get the AIR out of the tank when your filling it any propane tank has a bleeder valve, that's how you get the tank full even if you had a propane pump to help fill it up

[J57ltr]

It's not a bleeder it is a safety vent for DOT regulations.

[sconner1]

Correct. The valve is to vent excess pressure so the tank won't burst.
The valve may have been used to bleed air on the first factory fill.
But as you use the original fill, propane gas exits only. No air enters the tank.
The "air" in the tank is simply leftover Propane gas at a pressure of approx 1 atmosphere.
To vent this gas is wasteful and you run the risk of overfilling the cylinder too.
What happens then? As the temperature rises the pressure valve releases the extra, wasting more gas.

[turbotonic27]

is there any change of the mini tank to explode beacuse it has very high preasure inside during the process ?

[fzxdf5]

for this step, I built a cradle to hold a 100# tank so that I can rotate it 180 degrees securely...so that I can fill the 20#'ers too...I got an extension hose to make it easier to fill the little ones I don't like putting all the side pressure on the fittings so the cradle holding the tank and the hose gives me peace of mind

[jj.inc]

(removed by author or community request)

[The Lightning Stalker]

20lb cylinders with the POL/Acme fitting don't have a straw, so you have to flip the tank over to get the liquid out. It's rare to find a 20lb cylinder that has liquid withdrawal. It's easier to just flip the more common ones over. The big yard tanks have a liquid withdrawal port. It uses a different coupling. If you're trying to do a fill using the gas/vapor port, then that's why it's taking so long. What you want is liquid transfer.