can you fill a 100# propane tank using a 1000# propane tank?If so, what kind of adapter would I need?

Answer 1

It can be done with the proper equipment and training. You need to have a general understanding of the characteristic's of propane, as well as training in regards to dispensing propane into portable cylinders. As for fittings and equipment, you would need to have a clear understanding of each of the various valves and fittings on the storage tank. You would need a liquid withdraw valve adapter, that should be permanently attached to the liquid withdraw valve on the storage tank. You would then need what is commonly referred to as a drift hose. A drift hose is just a hose, with which ever fitting you need for the type of cylinder you will be filling. In the case of 100lb. cylinder filling, you would need a POL filler fitting on the drift hose.


Without a pump you are mearly drifting propane from one tank to another, so it is generaly a slower process than taking the cylinder in to a dealer for a fill. Portable DOT cylinders such as 100lb cylinders should always be filled by weight, so the use of scales is a must. And, it is at this point that the traning would come in. There are many saftey issues that come into play when dispensing propane.
Tare weight / Fill weight
Cylinder periodic certification. 12 year 7 year, or 5 year.
These are just a couple of the items that a person needs to have a clear understanding of.
So in short.... Yes it can be done by a person that is properly trained, but if a person does not meet the mimumum requirments they should not even consider attempting it.

Your fisrt step should be with the local athority haveing jurisdiction over propane tank installations. In some areas it is illegal to install a liquid withdraw valve adapter for continued use in a non-commercial / industrial installation. In some areas it is also considerd a propane dispenser installation once you do this and you may fall under a whole new set of rules and standards.

Answer 2

You could using a pigtail but all you would get into the 100# cylinder is vapor which will not amount to much fuel. All the larger tanks have liquid withdrawl valves but you have to use specialized hoses for that. Plus like others stated liquid propane will cause frost bite. It boils at 44 below zero. The propane delivery drivers wear specialized rubber gloves to protect there skin.
As for as filling one tank from another it is not an issue of overfilling because once the pressure equalizes it will work off of gravity. Open the bleeder valve to relieve pressure in the smaller tank & when it starts to blow liquid then its @ 80% full, shut off the filling process. This works better on warmer days so in the middle of winter it would be a long process.
They sell adapters made to fill the small propane bottles ,used in soldering and such , from a 20# cylinder.

Answer 3

that is not a good idea.
you can overcharge it and have a blow out.
propane is very cold and highly explosive.
if you get hit with any overspray or leaking gas you will have frost bite and a possible explosion.
go to a welders shop or propane dealer and have them charge it for you.

Answer 4

"view is not worth the climb". Don't be cheap. Call your gas company to come fill it. As stated above....you can get hurt or worse doing this stuff without proper training and equipment.

Answer 5

first its against the law unless u have the right lic......second u need a scale because the gas is weighted and this tells u how much u r putting in........plus, u only fill them 80%.u could over charge them and it explode!

Answer 6

No.