Pfeiffer Vacuum

The DUO 20M has been added to the "M Series" of magnetic coupling rotary vane pumps. The larger capacity pump delivers a high volume flow rate of 14 cfm at 60 Hz and features a dual voltage, dual frequency motor which gives the user the option with a flip of a switch to select 100-110V 50Hz or 100-120V 60Hz on one side or 200-240V 50Hz or 60Hz by flipping the switch the other way. The pumps feature a magnetic coupling and an integrated hydraulically controlled, high speed, high vacuum safety valve. They are hermetically sealed resulting in a leak rate of <1E -5 mbar l/sec.