HELP - Copper or Brass AC Condenser barb fitting to O ring conversion

[kuseetha]

Hi experts,

I am new to this topic and I am new to this forum too.

I have a 70s Holden with the factory AC condenser made from copper/brass. I am going to retrofit new A/C lines, compressor, evaporator, filter and so on. Going to re-use the copper/brass condenser because it is a better and durable material.

The problem I have is, it has two barb fittings from factory. See picture below.


The AC person wants to convert this to a O ring style connection by welding 1/2" thread, R134 flare copper fitting, so that an aluminum hose with O ring can be fitted with threaded fitting.
He wants me to find something like this, but in copper. (he couldn't find any with his local suppliers)



Can someone please help me find one to buy online or give some advice how to get this sorted?

I am not sure whether this is the correct type of connector, or whether there is a better way to do this.

TIA guys

[JohnHere]

If you're going to convert the car from R-12 to R-134a, you'll be better served, in my humble opinion, by replacing the serpentine-style OE condenser with the largest parallel-flow condenser that will fit. If you go with a modern PF condenser, you should be able to make up the hoses or lines (or have them made up) using readily available parts.

If you still want to keep the OE condenser, which will be less efficient and result in less cooling with R-134a, you might be able to source the needed adapters from Century Tool & Equipment in St. Louis, Missouri, or Cold Hose in Ocala, Florida, although locating suitable weld-on *copper* adapters will be extremely difficult.