The oil-free and dry compressing single-cylinder diaphragm pump from the PB-3 product line can be used for evacuating, conveying and compressing gases and vapours up to a final vacuum of 85 mbar. Five different ranges with further unique models are available within the product line. (Curve presentation of the standard models, per model range).

The  PB-3 product line is equipped with a single-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 85 mbar
  • Compact construction and low spatial requirements
  • Maintenance-free operating time with long service life

Free flow8.4 l/min15.2 l/min23.5 l/min25.5 l/min33 l/min
Final vacuum150 mbar120 mbar95 mbar125 mbar85 mbar
Final pressure (abs.)4 bar3 bar2 bar
Pump heads1
Hose coupling, suction / pressureG 1/4"
Motor power / r.p.m.0.12 kW / 1400 min-1
Mains requirement / Frequencies230 V - 50 Hz
Noise level57 dBA bis 59 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 H239.5 mm x 120 mm x 179.5 mm
Weight4.5 kg
Impermeable to gas1 x 10-3

vacuum flow [l/min] pressure [mbar] 0 100 200 300 400 500 600 700 800 900 0 5 10 15 20 25 30 35 MP65-H5-W14 MP75-H5-W14 MP75-H6-W14 MP86-H6-W14 MP86-H8-W14

User manual Data sheet