Need AC adapter

[The_Jeff]

Have a generic AC manifold set. Its yellow hose input takes what seems all the world like a male 3/8-24 brake line nut with a bubble flare (actually a 45 degree angle.) Also have some home AC adapters that take the same thing in 7/16-24.

Have a r134a can tap that has a 7/16-ish (actual diameter, nominal 1/2") ACME male thread output.

What do I need to bring these two together, and, bonus question, why are they trying to not let me do this?

 

[The_Jeff]

Further research indicates this might be accomplished with an R12 to R134a adapter. R12 is not at all involved in this, want to charge a 134a car. Are the manifold hoses still threaded with obsolete tech just because that's how it's always been?

 

[thastinger]

Are you opposed to something like this
https://www.amazon.com/R134A-Car-Re...d2lkZ2V0TmFtZT1zcF9zZWFyY2hfdGhlbWF0aWM&psc=1

 

[The_Jeff]

I had something cheesy like that but it stopped passing gas (hah!) and since I have a "real" manifold I'm trying to do it "right."

 

[Urshurak776]

Subject line misleading! LOL I was expecting an electrical adapter or something.

 

[Nukeman7]

Have a generic AC manifold set. Its yellow hose input takes what seems all the world like a male 3/8-24 brake line nut with a bubble flare (actually a 45 degree angle.) Also have some home AC adapters that take the same thing in 7/16-24.

Have a r134a can tap that has a 7/16-ish (actual diameter, nominal 1/2") ACME male thread output.

What do I need to bring these two together, and, bonus question, why are they trying to not let me do this?

I think one of these adapters will accomplish your objective:

R-12 to R134a Coupling Adapters

 

[The_Jeff]

^ That's about what I wound up getting locally at NAPA for $16, sheesh, big markup for them. P/N for posterity: 78-3199/ NTE 783199 ADAPT 1/2ACMEFX1/4MFL "you sir are a mouthful."

Works great, got the kid's Prius down to a 43' vent temp in 70+ dewpoint swampy air.

Only question remains, why do they sell stuff that doesn't fit with other stuff that you'd expect to go together?

 

[mk378]

The 3/8 thread (flare for 3/16 tubing size) was used on the high side of later R-12 cars so people couldn't put their basic cheap can hose on the high side by mistake.

All the fittings were changed for R-134a to discourage mixing of refrigerants during the transition era. A mixture of the two refrigerants has markedly different pressure-temperature properties than either one alone and will not work.