Air Operated Diaphragm Pumps

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sera Air Driven Diaphragm Pumps are cost-effective, leakage free displacement pumps for flow capacities up to approx. 51 m³/ h. They are driven by dry, non-lubricated compressed air.

Field of application:
  • Free-flowing chemicals with
  • aggressive
  • odorous
  • abrasive
  • flammable
  • viscous
  • or toxic characteristics
Advantages:
  • Cost-effective
  • Leakage free
  • Safe against overpressure
  • Low-maintenance, continuous duty
  • Designed in accordance with ATEX
  • Safe to run dry
  • Dry priming
  • Adjustable flow capacity
  • High-quality materials
  • Robust

APB200

 
 
 
 
 
 
 
Design and Function:

An air control valve supplies the air chambers behind the diaphragms alternately with compressed air. One diaphragm is pressed to the front (= pressure stroke) while the other one is pulled backwards (= suction stroke).

The special design of the air control valve ensures that the pumps can always be operated safely, i.e. that there are no undesirable standstills. The valve balls open and close in the stroke rhythm of the diaphragms.

Materials:

The medium-contacting parts can be supplied in a great variety of different materials. Material combinations coordinated with the application make the pumps suitable also for critical dosing media.

Cross section of a sera air driven diaphragm pump