A buddy of mine, in another state, brought home a fork lift propane tank from the company he works at (and owns), for use on his barbeque grill.
I'm not sure what piping changes he had to make to hook the tank up to the grill regulator, but he got-er-done.
The regulator froze up, internally and externally, and the grill caught on fire. My understanding is there was no damage to the grill.
Are fork lift propane tanks charged to a higher pressure than the propane tanks for a gas grill?
My thought is both tanks are the same, but I have no idea what pressures, etc. either one is charged to, I've never paid any attention.