ATD 3525 R 134A Coupler Conversion Review

Saved me from buying new gauges, just used this tool to convert an R12 gauge to an R134 gauge. They arrived looking exactly like the photo on Revain! They work very well and come with everything you need to use them.

Seems to be a solid kit with no leaks. If you're serious about 500 micron vacuum, go for the screw type. I'm in HVAC and refrigeration, not automotive, but I started messing around with my cars and friends. This is a solid purchase.

They all fit my old sensor set perfectly so I can use it now. came quickly. I am very happy with it. everything you need is there.

I was able to use my old sensors on later systems but the high side didn't work on my Chevy. Although it was the same with my neighbor Ford. I tried my friend's adapters, his high side didn't work on my Chevrolet either. Not sure why that is because it works on Fords.

It worked well and didn't seem to leak. I pulled 30 inches of vacuum on the machine and let everything sit for 20 minutes with no vacuum drop so everything met my expectations. With just the adapters on the hoes the vacuum was 30 inches and lost about 2 inches overnight so that was an extra test. Very happy.

The adapters came very quickly and were of good quality, but the 1/4" adapter (all brass) was not included in the package. I don't know where the adapter was supposed to come from and how it came in the package.

came without thread protection and the threads on the high side were broken off. The coupling mechanisms themselves are not properly installed and do not connect securely, not only poorly designed (typically Chinese made) but also somewhat dangerous. I shouldn't have relied on reviews from seven years ago as they are obviously not from the same vendor. Compared to port cargo transportation, these are the same couplers