A professional grade Appion tool that is tested for leaks prior to dispatch.
This tool serves a dual purpose. Primarily it enables you to remove the Schrader valve core from the compressor service port. Removing this valve will make obtaining a vacuum significantly faster.
Secondly, the tool provides a port to connect the vacuum gauge along with an isolation valve to isolate the vacuum pump and hose from the system under test. This allows for an extended vacuum hold/decay test to validate that both the system is leak free and that all moisture has boiled off.
More info: https://appiontools.com/mgavcr/