Dried out screw vacuum pumps operate with two screw rotors rotating in reverse directions. This traps the medium to be pumped between the cylinder and the screw chambers and transports it to the gas discharge. The advanced screw design results in lower electrical energy consumption compared to standard screw styles. It also results in a lesser high temperature load of the 
compressed gas.
Screw Vacuum Pump cooling may be accomplished through a higher performance air cooling technique eliminating the necessity of cooling drinking water or indirect cooling method leading to uniform temperatures throughout the pump body, eliminating chilly spots and providing a thermally stable water coat. The advanced screw style allows for best-in-class hydrogen pumping capabilities. Water cooling can take place in kind of both direct drinking water cooling or radiator cooling with air-cooled heat exchangers.