This is of a dry vacuum pump is a pump that will not use any fluids to create a vacuum or contact the process gas and will also discharge to atmosphere. … Timing gears with oil reservoirs and close clearances between your rotors and casing are extra attributes that define a dry vacuum pump.
Principle of Operation
Dried out screw vacuum pumps operate with two screw rotors rotating in opposing directions. This traps the medium to end up being pumped between the cylinder and the screw chambers and transports it to the gas discharge. … In addition, it results in a lesser high temperature load of the compressed gas.