Larry,

You should consider converting to R134A. It works well, and can be purchased for
around ~3$-5$/can at any auto parts store. You can also buy it in 30lb canisters
without a license. The only downside to converting an old system designed for R12
or R22 is that you will need a new expansion valve. Also you may need a new compressor
to develop the higher pressure needed if your old compressor is tired.

If you want to be able to directly read the temperatures, you'll need a new set of
guages also, so there is some expense to converting over. However, when you are done
with the conversion you are back to the days of cheap and legal freon :-). Over time
you'll spend more than the conversion cost keeping an old R12 system going.


Don W.


Larry wrote:
wrote in
ups.com:


I have also considerd adding foam floatation to my boat. She has many
little areas that are never used for anything whose total volume might
be enough.




Airbags deployed with liquid freon would be very compact to store, non-
flammable and storage is at low pressure, unlike CO2. That'd work as soon
as you got past the government bureaucrats hell bent on maximizing freon
profits for a few big chemical companies.

My last batch of R-12 smuggled in from Aruba was made in Tennesee! We
Americans just can't buy it.