I've been considering switching to oxypropane on my truck's torches, and keeping acetylene in the shop only. Along those lines, one thing I've been thinking about is filling 20 lb propane tanks from a bulk tank. At one time we had a 500 gal bulk tank, but it was owned by the propane company and when I put in a wood stove we weren't using it enough to justify keeping it here.
Our house already uses LP for the stove and we'll soon be replacing our electric tank water heater with an LP-fired on-demand water heater. Currently, the house is plumbed to a pair of 100-lb cylinders which are owned by the gas company, but I'm thinking of buying our own bulk tank, filling it maybe every couple of years when it needs it, and also using it as a filling point for small bottles for torch and BBQ use. This would be for my own personal use, not the public's.
I know this can be done, and is being done, safely. I know some people gravity fill and some use a pump of some sort. I also know the tanks must be filled from the liquid part of the bulk tank.
What I'm asking is for opinions on the idea itself, and relevant real-world experience. Whether you think my specific situation would benefit from all of this trouble or not, I would hope that this thread would get some good information out on the table, from how to wisely buy a used or new bulk tank, to tank maintenance, to potential safety issues, to correct filling procedures.
I didn't put this in the safety forum because I'm looking for more than just safety info, and also frankly because that is a less-traveled forum. Knowing this is a public discussion on a potentially dangerous subject, I would like a healthy empasis on safety to be maintained. But please, unless the sky really is about to fall, let's not run around being Chicken Little.