[Shop-talk] Portable air tanks?

[Randall]

> I remember seeing this discussed, and I seem to recall that unscrewing
> the original valve is a challenge -- any actual experience?

Not quite experience, but I once had the local propane dealer replace a
valve. The tank was clamped into a hinged metal claw sort of thing, and held
there by a log chain and chain binder.  As I recall, he used a wrench that
was clearly purpose-made and had a handle about 4 feet long.  And he still
had to put his back into it to get the valve to turn.

I have a different local dealer now, but they quoted me around $20 the other
day for replacing the valve.  Might be worth asking if yours would just
remove the old valve and hand you back the pieces for $5 or so. 

-- Randall