Features:
* Oil free,clean exhausted air by built- in filter .
* Automatic cooling exhaust system ensures 24 h operation continuously.
* The pressure adjustable design can satisfy a certain range of vacuum and gas velocity.
* TEFLON surface treatment, anti-gas corrosion.
* orange look for anticorrosive vacuum pump(eg: GM-0.33IIP, GM-0.5P, GM-0.5IIP, GM-1.0P