The oil-free and dry compressing PTFE laboratory diaphragm pumps from the PB-28 product line can be used for evacuating, conveying and compressing gases and vapours up to a final vacuum of 15 mbar. Five different ranges with further unique models are available within the product line. (Curve presentation of the standard models, per model range).
The PB-28 product line is equipped with a two-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.
|Free flow||8.5 l/min||16 l/min||21.5 l/min||25.5 l/min||33 l/min|
|Final vacuum||45 mbar||20 mbar||25 mbar||20 mbar||15 mbar|
|Final pressure (abs.)||3 bar||2 bar||1 bar|
|Hose coupling, suction / pressure||G 1/4" / NPT1/4"|
|Motor power / r.p.m.||0.09 kW / 1400 min-1|
|Mains requirement / Frequencies||115 V - 50-60 Hz o. 230 V - 50-60 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||234 mm x 131 mm x 159 mm|
|Impermeable to gas||1 x 10-3|