Aggressive / corrosive media
Highly viscous media
APB air driven diaphragm pumps are cost-effective, leakage free displacement pumps for flow capacities up to approximately 51m³/ h. They are driven by dry, non-lubricated compressed air.
Field of application: free-flowing chemicals with
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 is pulled backwards (= suction stroke).
The special design of the air control valve ensures that the pumps can always be approached safely, ie that there are no undesirable standstills. The valve balls open and close in the stroke rhythm of the diaphragms.
The medium-contacting parts can be supplied in different materials. Material combinations co-ordinated with the application make the pumps suitable also for critical dosing media.