This tool performs 3 functions!
The coolant retention feature is similar to the MAR100 as it creates a pathway of air from where the component is removed to where the tool is attached to the cooling system. Openings up to 21 mm will have little or no leakage.
The second function is a coolant refiller with a maximum vacuum of 28.1 inHg (at sea level), flows 8.1 CFM and has an astounding refill rate of 4.8 gallons/minute!
The third function is as an air powered pressure tester. Test your repair without removing the tool. Easy!
Minimum 100 psi