Rotary piston vacuum pumps are most commonly used in heavy duty industrial applications. They are traditionally oil-sealed and tolerant to ingress of contaminated gases. Flow rates of up to 3,000 m3/h can be achieved, with vacuum of 10¯³ mbar are achievable from the Dynapumps range. Rotary Piston pumps are differentiated by their extremely heavy duty design and construction. Rotary Piston pumps are still the favoured vacuum technology in many manufacturing industries.