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Air driven diaphragm pumps
Air driven diaphragm pumps
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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.
Application:
- Free-flowing chemicals with
- aggressive,
- odorous,
- abrasive,
- flammable,
- viscous or toxic properties
Advantages
- Cost-effective
- Leakage-free
- Safe against overpressure
- Low-maintenance
- continuous duty
- Design according to ATEX
- Safe to run dry
- Dry priming
- Adjustable flow capacity
- High-quality materials
- Robust
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Design and Functioning:
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 approached safely, i.e. that there are no undesirable standstills. The valve balls open and close in the stroke rhythm of the diaphragms.
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Materials:
The medium-contacting parts can be supplied in a great variety of different materials. Materialcombinations coordinated with the application make the pumps suitable also for critical dosing media.
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Materials available:
- Pump body:
PP, ECTFE, AISI 316, Aluminium
- Diaphragms:
PTFE, NBR, EPDM, Hytrel, Santoprene
- Valve balls:
PTFE, AISI 316, Glas, EPDM
- Valve seats:
PP, PVDF, ECTFE, AISI 316, AISI 304, PE, PPS-V
- Valve seals:
EPDM, FPM, PTFE, NBR, Silicone
- Drive housing:
PP with glass fibre content, PP with carbon fibre content
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Download
| Type sheet: |
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| APB – Series (II 3G EEx c IIBT4) |
| Pump type |
Max.flow capacity ltr./min.
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Max. operating pressure bar
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Max. suction head m (dry / wet)
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Download
Data sheet
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| APB - 5 |
5 l / min
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7 bar
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3 m / 7 m
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| APB - 15 |
15 l / min
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7 bar
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3 m / 7 m
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| APB - 30 |
30 l / min
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7 bar
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3 m / 7 m
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| APB - 45 |
45 l / min
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7 bar
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3 m / 7 m
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| APB - 90 |
90 l / min
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7 bar
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3 m / 7 m
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| APB - 100 |
100 l / min
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7 bar
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3 m / 7 m
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| APB - 150 |
150 l / min
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7 bar
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3 m / 7 m
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| APB - 200 |
200 l / min
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7 bar
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3 m / 7 m
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| APB - 340 |
340 l / min
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7 bar
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3 m / 7 m
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| APB - 650 |
650 l / min
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7 bar
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3 m / 7 m
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| APB - 850 |
850 l / min
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7 bar
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3 m / 7 m
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| APB – Series (II 2G EEx c IIBT4) |
| Pump type |
Max.flow capacity ltr./min.
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Max. operating pressure bar
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Max. suction head m (dry / wet)
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Download
Data sheet
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| APE - 5 |
5 l / min
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7 bar
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3 m / 7 m
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| APE - 15 |
15 l / min
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7 bar
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3 m / 7 m
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| APE - 45 |
45 l / min
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7 bar
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5 m / 7 m
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| APE - 90 |
90 l / min
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7 bar
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5 m / 7 m
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| APE - 100 |
100 l / min
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7 bar
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5 m / 7 m
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| APE - 150 |
150 l / min
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7 bar
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5 m / 7 m
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| APE - 200 |
200 l / min
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7 bar
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5 m / 7 m
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| APE - 340 |
340 l / min
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7 bar
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5 m / 7 m
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Note:
Greater flow capacities on request!
max. air control pressure for all types: 7 bar
The control air must be dry and free from oil or solids.
The sera air driven diaphragm pumps are to be designed on the basis of the performance characteristics as shown in the data sheets.
In order to achieve an optimum service life and performance the parameters for normal operation of the pumps should be around the middle of the performance diagram.
Solids contents and viscosity of the dosing medium will reduce the flow capacity.
| Pulsation damper |
Type
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Drawing
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Data sheet
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Type sheet
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series MPD ensure a relatively smooth flow and eliminate pressure peaks which may lead to undesired vibrations in the pipe system.
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MPD25.1
to
MPD 340
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| MPD 650 |
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| MPD 850 |
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| Compressed air supply units |
Drawing
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Data sheet
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| are offered for all sera air driven diaphragm pumps. They consist in the main of a filter pressure controller, shut-off valve, check valve and the required fittings incl. 5 m pneumatic hose. With the help of the filter pressure reducer the control air pressure can be adapted to the operating pressure and the optimum operating point of the pump can be set.are offered for all sera air driven diaphragm pumps. They consist in the main of a filter pressure controller, shut-off valve, check valve and the required fittings incl. 5 m pneumatic hose. With the help of the filter pressure reducer the control air pressure can be adapted to the operating pressure and the optimum operating point of the pump can be set. |
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| Stroke transmitting devices |
Data sheet
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| can be integrated in the drive housing. They emit a signal per each performed pump stroke which is electrically evaluated. This way sera air driven diaphragm pumps can be used also for batch dosing purposes. |
on request
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