None of them worked. The red top valve worked in reverse and the blue bottom valve didn't open at all. I had to go back. Garbage.
VIVOHOME 220LB HVAC Electronic Digital Refrigerant Charging Weight Scale β High Precision with Protective Case
9 Review
Robust Robinair (RG3) Portable Refrigerant Recovery Machine, 115V, 60Hz -Efficiently Recovers Liquid and Vapor Refrigerant
9 Review
π UView 560000 Combustion Leak Tester: A Reliable Tool for Efficient Diagnosis
9 Review
π¬οΈ UView Airlift Cooling Checker 550000
9 Review