I took a car and started filling my air conditioner with R134a refrigerant. I traveled to all the local auto and hardware stores. I don't see what I need. I brought an Interdynamics DV-134 R-134a A/C gauge valve (https://amzn.com/B000CO7Q6U) but it was a 1/2" Acme thread. I then bought a set of pressure gauges called the Combo 3.5CFM. Air Vacuum Pump 1/4 HP HVAC + R134A Kit A/C Manifold Gauge Set", but the ebay hose had 1/4 threads, link here: [.] Well finally I found an adapter that works for that, what i need is suitable to attach it interdynamics DV-134 R-134a air conditioner metering valve brass and the other end of a blue 1/4 thread hose fits perfectly as seen in the pictures totally satisfied with my purchase if someone has problems, it's all to help you.
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