Back4-Cylinder Laboratory Diaphragm Pump PB 20

Description

The oil-free and dry compressing laboratory diaphragm pumps from the PB-20 product line can be used for evacuating, conveying and compressing gases and vapours up to a final vacuum of 1 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-20 product line is equipped with a four-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 1 mbar
  • Lab equipment
  • Compact construction and low spatial requirements
  • Maintenance-free operating time with long service life

Large pb 20 1 web

Large membran linear

Large pb 20 zeichnung


SeriesLAB-245LAB-246LAB-248LAB-345LAB-346LAB-348
Free flow80 l/min47 l/min37 l/min112 l/min69.5 l/min55 l/min
Final vacuum80 mbar15 mbar7 mbar80 mbar7 mbar1 mbar
Final pressure (abs.)3 bar2 bar
Final pressure with KG-Gears32
Pump heads4
Hose coupling, suction / pressureG 1/4"
Motor power / r.p.m.0.37 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°
Umgebungs-Temperatur für den Motor+ 5 C° bis + 45 C°
Umgebungs-Temperatur für den Pumpenkopf+ 5 C° bis + 45 C°
Dimensions L x W x H361 mm x 243 mm x 248 mm
Weight14 kg
Impermeable to gas1 x 10-3

Vakuum Flow [l/min] Druck [mbar] 0 100 200 300 400 500 600 700 800 900 0 20 40 60 80 100 120 LAB-245 LAB-246 LAB-248 LAB-345 LAB-346 LAB-348

Downloads
Data sheet