This versatile tool for the lo- or hi- side of a system does four jobs:

1. Vacuum valve. Extra 1/4″ side port on the 18975 to attach electronic micron vacuum right at the system for greater accuracy or to add refrigerants. Working pressure of 800 psi.
2. Core removal access. Lets you evacuate and charge through an unrestricted line for increased speed and higher vacuum.
3. Core replacement.
4. Recovery valve. Core removal allows recovery unit to work at maximum efficiency, speeding the recovery process.