Automotive Air Conditioning Information Forum

Hi,

First post here. I have a set of gauges that I need to connect to a Harbor Freight Pittsburgh Air assisted vac pump and to the refrigerant fill valve. I bought the adapters to connect the high and low side gauges to the high ad low side Schrader valves so no issues there. Just can't seem to find adapters for the vac pump and fill valve.

Thanks in advance!!!!

Most vacuum pumps have two fittings (cap the one not used), a 1/4-inch male flare like R-12 used, and an R134a male Acme fitting.

I'd be surprised that your yellow line from your service gauges does not thread directly onto one of those.