The oil-free and dry compressing piston pumps from the PB-39 product line can be used for evacuating, conveying and compressing gases and vapours up to a final vacuum of 15 mbar. Eight different ranges with further unique models are available within the product line. (Curve presentation of the standard models, per model range).

The PB-39 product line is equipped with a two-cylinder piston pump with con-rod drive. The piston, rigidly fixed to the con-rod, carries out a tilting motion in the cylinder when moving up and down. The piston rings are therefore more heavily stressed than with a linear drive. The length of the con-rod from the eccentric shaft to the piston is however designed to impart as small a tilting motion as possible to the piston. The eccentric shaft with con-rod is additionally ball-bearing mounted in the carrier plate and does not sit on the motor shaft. This ensures that the motor shaft and the A-side motor bearings are not loaded. This well-thought-out design also ensures a long service life for the mechanical components.

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.


  • Oil-free, dry-running piston pumps for transporting, evacuating and compressing gases. The extremely smooth cylinder running surface guarantees low friction for the PTFE piston rings.
  • Quiet and low-vibration thanks to precise balancing of pump and drive motor.
  • Permanent operation possible through optimised cooling and separate mounting of the eccentric shaft.
  • Maintenance-free thanks to encapsulated ball bearings with special grease filling.

Free flow39.5 l/min47.5 l/min63.5 l/min72 l/min21.5 l/min25.2 l/min33.8 l/min37 l/min
Final vacuum150 mbar125 mbar100 mbar85 mbar35 mbar30 mbar20 mbar15 mbar
Final pressure (abs.)6 bar1 bar6 bar5 bar3 bar2 bar
Pump heads2
Hose coupling, suction / pressureG 1/4"
Motor power / r.p.m.0.21 kW / 1400 min-1
Mains requirement / Frequencies115 V - 50-60 Hz o. 230 V - 50-60 Hz
Noise level50 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 H255 mm x 134.5 mm x 173.5 mm
Weight8.3 kg
Impermeable to gasnicht möglich

Data sheet