Richard J Kinch wrote:

Jeff Wisnia writes:


I just sprang a whole buck at a flea market for a brand new "converter"
intended to let you use a "disposable" 30 lb freon tank as a portable
air tank. The gadget's got a schrader valve filling inlet, a dial
pressure gage, some kind of blowoff valve, a shutoff valve, and a few
feet of hose with a tire valve chuck on its end.


Refrigerant tanks only "exhale", they have a mechanism inside (check
valve?) to prevent exactly this sort of unsafe adaptation. Just how does
the kit defeat that?

There are refrigerant recovery tanks meant to both inhale and exhale. They
are considerably heavier construction than the disposable supply tanks.

I presume if there was such a valve was part of the original tank valve
I removed when I put the "conversion kit" on, as the tank sure fills up
fine.

But, after reading Roy's comments and understanding well where he's
coming from re the energy stored in compressed gasses, I think I'll
pitch the idea and buy myself a "real" portable air tank, they're cheap
enough.

The Freon bottle feels pretty light for its size and I noticed that one
of the "outie dimples" it stands on is already crushed in a bit, meaning
it isn't all that thick, plus it falls over too easily, and it has to be
at least 20 years old already.

Thanks guys,

Jeff

--
Jeff Wisnia (W1BSV + Brass Rat '57 EE)

"My luck is so bad that if I bought a cemetery, people would stop dying."