The oil-free and dry compressing diaphragm pumps from the PB-23 product line can be used for evacuating, conveying and compressing gases and vapours up to a final vacuum of 10 mbar. Six different ranges with further unique models are available within the product line. (Curve presentation of the standard models, per model range).

The  PB-23 product line is equipped with a two-cylinder diaphragm pump with con-rod drive, which carries out an oscillating, tumbling and rocking, upwards and downwards movement of the diaphragm. The diaphragm is fastened to a rigid con-rod and is subjected to a greater or lesser degree of flexing and stretching, depending on the length of the con-rod. The well-thought-out design of the drive offers the user a compact construction and low spatial requirements.

The range is further distinguished by quiet operation with proven long service life and maintenance-free operating time.

The materials used, such as aluminium for the gas-conducting components, stainless steel for the valves and piping and VITON (FKM) for the diaphragms, open up a wide range of application options with non-aggressive gases.


  • Excellent final vacuum up to 10 mbar
  • Compact construction and low spatial requirements
  • Maintenance-free operating time with long service life

Free flow17 l/min8.5 l/min41 l/min22.5 l/min65 l/min33 l/min
Final vacuum120 mbar32 mbar100 mbar11 mbar85 mbar10 mbar
Final pressure (abs.)4 bar2 bar1 bar
Pump heads2
Hose coupling, suction / pressureG 1/4"
Motor power / r.p.m.0.09 kW / 1400 min-1
Mains requirement / Frequencies115 V - 50-60 Hz o. 230 V - 50-60 Hz
Noise level49 dBA bis 53 dBA
Permissible gas admission temp.+ 5 C° bis + 45 C°
Permissible ambient temperature+ 5 C° bis + 45 C°
Permissible ambient temperature motor+ 5 C° bis + 45 C°
Permissible ambient temperature pump+ 5 C° bis + 45 C°
Dimensions L x W x H234 mm x 131 mm x 159 mm
Weight5.5 kg
Impermeable to gas1 x 10-3

vacuum flow [l/min] pressure [mbar] 0 100 200 300 400 500 600 700 800 900 0 10 20 30 40 50 60 70 MPZ65.22- MPZ65.23- MPZ75.22-H6-230V-50Hz MPZ75.23-230V-50Hz MPZ86.22-H8-W14 MPZ86.23-230V-50Hz

User manual Data sheet