Mastercool 53001 Nitrogen Pressure Regulator | Professional-Grade | HVAC & Automotive Leak Testing | 1/4” SAE Flare Outlet | 10,000 PSI | Durable & Reliable

Makes it easy to find leaks in a/c systems. High quality. I got a used tank off marketplace and had it filled.

With the rising cost of R134A, I finally broke down and purchased this regulator kit to use for checking A/C systems on medium and heavy duty trucks. I should have purchased a long time ago. Works great, and is another quality Mastercool product.

This is the only way to test an A/C system hands down the Quickest and most accurate .. no more dyes and uv flashlights .

Works great

This nitrogen regulator is solidly built and easy to use. The gauges are glycerine filled and have a smooth motion for reading pressure. All the knobs turn easily.

I use this pressure test regulator to test for leaks in both home and automotive ac. This regulator is high quality. I recommend if you want to make sure these is no leaks prior to charging with refrigerant.

Tested system perfectly

This is the best kit to use for charging a/c systems with nitrogen. You can mess around and build a kit like this with mixed results or just by this and be up and running same day without having to track down obscure fittings.