Roots vacuum pumps
Roots pumps are rotary plunger type pumps where two symmetrically shaped impellors rotate in opposite directions inside the pump housing. Due to lack of friction in suction chamber the roots vacuum pump is capable of operating at high speeds. The roots pumps operate at the high speeds absolutely quietly due to lack of reciprocating mass which also provides reliable dynamic balancing. As fore vacuum pumps can be used rotary vane, rotary piston, screw and liquid ring pumps. This types of combined pumps can be used in all fields where the rough, medium vacuum and high pumping speeds are required.