-> "Controlled leak" was a good way to put it.  Probably run a long time
-> off a 100 pound propane tank.  Not surprised about the snubber diode
-> though.  Lots if wire in one of those valves.
I get several hours off a five gallon "Squatty body" butane tank.  Last
real 'urricane we had I ran a _Garden hose_ over to the main 150 gal
storage tank, and it just sat there and hummed. But it WON'T pull the AC
unit, so I suffer from the humidity.
I found out about the diode, because the thing was biting the HECK outa
me and I decided I'd had enough of that!  Tied a diode across it, and
scratched the wire across the battery post and POW!  Adios diode!
I have some giant 5/16" stud mount transistors that I bought by the
pound, (15cents a pound by the bucketfull) that I have NOT been able to
burn out so I tied the B-C junction across the thing and no more shocks!

 ^..^
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