    
Diaphragm Technology
 - Dynamic
Compression by Flexible Membrane
Diaphragm pumps work by reduction of a volume using a flexible membrane
driven by a crank.
- Suitable for pressure and vacuum or combined
- Gas tightness to the outside
- Durable plastic or corrosion resistant coated aluminum
- High variablility
- Long-life diaphragms
- Balanced for low vibration
- Low noise level
- Liquid media models available – suitable for aggressive media
applications
- Permanently lubricated bearings
- Flow rates up to 91 l/min (3.2 cfm), end vacuum 29.2 in.Hg (10 mbar
abs.), pressure 2.8 bar (41 psi)
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Technical Overview - Diaphragm
Pumps
In dry running diaphragm pumps, a flexible diaphragm in the pump head
is moved up and down via the conrod and through the action of an
eccentric on the motor shaft. On the downstroke, air is drawn into the
pump chamber and expelled on the upstroke. One-way flap valves mounted
within the pump head control the direction of flow of air (See
Animation). Equally
suitable for use as a vacuum pump or compressor, they are characterized
by low noise, high efficiency and gas tightness.
Models are available with AC or DC drive. They are available in
single and multiple head models, which can be configured in series or
parallel, with vacuum to 1 mbar abs, pressure to 2.8 bar and flow rate
in the range from 0.3 l/min to 90 l/min.
Diaphragm pumps are ideally suited to applications where the
attributes of efficiency and gas tightness are important such as:
sampling pumps for portable gas detectors, gas analyzers, medical
autoclaves, various laboratory applications or wherever efficient,
compact vacuum pumps or compressors are required.
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