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  Generally speaking, a diaphragm pump moves fluids using a two-part cycle. In the first part, the diaphragm is pulled away from the input/output valves so that the volume of the chamber increases. This increase in volume results in a decrease in pressure within the chamber relative to the input and output, creating a vacuum effect that draws fluid in. Check valves on the input and output connections ensure that fluid can only enter the chamber through the input connection.

A diaphragm pump is a positive displacement pump that uses a flexible membrane to pump fluids. The pump uses a series of check valves to ensure that fluid can only travel in one direction through the chamber. The diaphragm itself can be expanded and contracted using pressurized air or fluids, or motors.

1.advantage

1     small volume

2.     superior pressure technology

3.     Dry, durable, maintenance free

4.      Extreme chemical stability

5.     Mini design

6.      Bear  greater pressure

7.      Long life
2. The motor selection:6v,12v,24v


      Analysers

· Medical / pharmaceutical

· Environmental / water treatment

· Food / toxicology

Laboratory

· Filtration

· Chromatography

Cleaning industry

· Cuvette cleaning

· Sterilisers

·    Industrial washing machines

Printing

· Ink jet printing

· Photographic / film development

Other applications for diaphragm liquid pumps include: fuel cells, hydrogen generators, CD coating, dental technology, textiles and many more.