The oil-free and dry compressing small diaphragm pumps from the PB-19 product line can be used for evacuating, conveying and compressing gases and vapours up to a final vacuum of 85 mbar. Two different ranges with further unique models are available within the product line. (Curve presentation of the standard models, per model range).

The  PB-19 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 flow4 l/min6 l/min
Final vacuum270 mbar170 mbar
Final pressure (abs.)2 bar
Pump heads1
Hose coupling, suction / pressureG 1/8"
Motor power / r.p.m.0.09 kW / 2600 min-1
Mains requirement / Frequencies230 V - 50-60 Hz o. 115 V - 50-60 Hz
Noise level49 dBA bis 57 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 H105 mm x 61 mm x 83 mm
Weight1.2 kg
Impermeable to gas1 x 10-3

vacuum flow [l/min] pressure [mbar] 100 200 300 400 500 600 700 800 900 0 1 2 3 4 5 6 MP38-H3,6-W26 MP38-H5-W26

Data sheet