Description

The oil-free and dry compressing laboratory diaphragm pumps from the PB-21 product line can be used for evacuating, conveying and compressing gases and vapours up to a final vacuum of 8 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-21 product line is equipped with a two-cylinder diaphragm pump with linear drive. The staggering or flexing of the diaphragms is prevented here with precisely-straight upwards and downwards movement between the top dead centre and bottom dead centre. This ensures a long service life for the diaphragm. When compared to con-rod pumps with the same performance, diaphragm pumps are a more compact construction due to the omission of the long and rigid con-rods.

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.


Features

  • Excellent final vacuum up to 12 mbar
  • Compact construction and low spatial requirements
  • Maintenance-free operating time with long service life


SeriesLAB-323LAB-122LAB-123LAB-222LAB-223LAB-322
Free flow33 l/min17 l/min8.5 l/min42 l/min21.5 l/min65 l/min
Final vacuum8 mbar120 mbar32 mbar90 mbar12 mbar75 mbar
Final pressure (abs.)2 bar4 bar3 bar2 bar
Final pressure with KG-Gears2 bar4 bar3 bar2 bar
Pump heads2
Hose coupling, suction / pressureG 1/4"
Motor power / r.p.m.0.16 kW / 1400 min-1
Mains requirement / Frequencies230 V - 50 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 H308 mm x 206 mm x 199 mm
Weight8 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 LAB-323 LAB-122 LAB-123 LAB-222 LAB-223 LAB-322

Downloads
User manual Data sheet