Orion Motor Tech AC Manifold Gauge Set for Refrigerants R134a, R12, R22, and R502 - Essential for Car AC Maintenance

Gary W.: Great tool for the money.

United States on Sep 25, 2023

J. A. DiazJ. A. Diaz: AC gauges came with all parts advertised, easy to assemble hoses into manifold, and wound up using the R134a twist on tap. The low and high pressure connectors worked connectors worked perfectly. I was able to check our 2015 ML350 pressure and added about 6-ounces of R134a refrigerant, just enough once cooling restored. Quality gauges and great value.

United States on Sep 11, 2023

Steve Sullivan: Exactly what I needed

United States on Aug 13, 2023

Harry Briley: The instructions presume an expert if proper use. What is NOT mentioned: There is a spool of teflon tape to enable tightened hoses. Wrap tape around the ports on the manifold before attaching hoses. Wrap tape around the Low/High port adaptors prior to screwing into the hoses. If NOT using the yellow hose, you MUST attach it to the back of the manifold tightly or else gas escapes through that yellow hose (obviously since it is the vacuum connection). Opening both of the manifold gauge handles at the same time becomes a simple pass-through from Hi to Low ports ... and thus an error in usage (and rather unsmart). Check YouTube videos for how professionals use this device. Otherwise, the unit is high quality for this price break.
UPDATE 7/6/2023: Do NOT open either side valves on the manifold unless evacuating with yellow hose to a vacuum gas-recovery pump or using the yellow hose for charging. NEVER EVER open both gauges at the same time. Always close both only finger-tight (to not ruin the brass seats of the valve. If only trying to diagnose A/C, keep both valves on the manifold CLOSED.

United States on Jun 20, 2023

whitefishblue: I bought a motorhome and the AC didn't work...blew hot air and the compressor wouldn't kick on. I already had a vacuum pump from a wood stabilizing kit I bought, so I figured an inexpensive gauge set would at least help me do some initial troubleshooting. This did the job, and even let me complete the repair, but not without some frustration. For the vacuum test portion of the project, it worked flawlessly. But when it came time to load the refrigerant, I had two issues. One, it doesn't have a bleed valve, which is needed to purge the air from the yellow line so that you are loading just refrigerant into the system. I worked around this by partially unscrewing the yellow line where it connects to the gauge, but it didn't work very well. The other frustration was that the connections kept loosening. My understanding is that they are only supposed to be hand-tightened, as they use a gasket to establish the seal, and I do have good hand strength. Usually I have to be careful not to over-tighten things. But when loading the refrigerant you have to tip the bottle, and it seemed like any movement of the bottle would either cause the connection at the bottle to loosen or would convey...

United States on Sep 03, 2022

Cliente de Amazon: Me acaba de llegar, bien empaquetado, antes de la fecha programada, veremos que tal se desempeña! Excelente servicio!

Mexico on Sep 01, 2020