The oil-free and dry compressing small piston pumps from the PB-6 product line can be used for evacuating, conveying and compressing gases and vapours up to a final vacuum of 8 mbar. Seven different ranges with further unique models are available within the product line. (Curve presentation of the standard models, per model range).
The PB-6 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.



| Series | ML65.22-H5-W14/15 | ML65.23-H5-D14 | ML75.22-H6-D14 | ML75.23-H6-D14 | ML86.22-H8-D14/18 | ML86.23-H8-D14/18 |
|---|---|---|---|---|---|---|
| Free flow | 17 l/min | 8.5 l/min | 42 l/min | 21.5 l/min | 65 l/min | 33 l/min |
| Final vacuum | 120 mbar | 32 mbar | 90 mbar | 12 mbar | 75 mbar | 8 mbar |
| Final pressure (abs.) | 4 bar | 3 bar | 2 bar | |||
| Final pressure with KG-Gears | 4 bar | 3 bar | 2 bar | |||
| Pump heads | 2 | |||||
| Hose coupling, suction / pressure | G 1/4" | |||||
| Motor power / r.p.m. | 0.15 – 0.18 kW / 1400 min-1 | |||||
| Mains requirement / Frequencies | 230 V - 50 Hz o. 230/400 V - 50 Hz | |||||
| Noise level | 49 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 H | 300 mm x 175 mm x 173 mm | |||||
| Weight | 8 kg | |||||
| Impermeable to gas | 1 x 10-3 | |||||