Eccentric Diaphragm Pumps Icon Eccentric Diaphragm Pumps

Customising is standard practice for us: All our pumps can be modified to your specific requirements. And that within a few days.

General overview of our Eccentric Diaphragm Pumps

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Icon Eccentric Diaphragm Pumps

SP 270 EC-L

Eccentric Diaphragm Pump

SP 270 EC-L -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
100 ml/min 10 m H2O -3 m H2O 3 coreless 15260.8 16 x 25.1 x 38 mm
Icon Eccentric Diaphragm Pumps

SP 270 EC-LC-L

Eccentric Diaphragm Pump

SP 270 EC-LC-L -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
100 ml/min 10 m H2O -3 m H2O 3 iron core 15367.68 16 x 26.1 x 36.8 mm
Icon Eccentric Diaphragm Pumps

SP 270 EC-BLa-L

Eccentric Diaphragm Pump

SP 270 EC-BLa-L -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
100 ml/min 10 m H2O -3 m H2O 3 brushless 14859.2 16 x 25.1 x 37 mm
Icon Eccentric Diaphragm Pumps

SP 500 EC-LC-LP

Eccentric Diaphragm Pump

SP 500 EC-LC-LP -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
200 ml/min 10 m H2O -6 m H2O 6 iron core 35259 23 x 36.5 x 42 mm
Icon Eccentric Diaphragm Pumps

SP 550 EC-LP

Eccentric Diaphragm Pump

SP 550 EC-LP -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
200 ml/min 10 m H2O -6 m H2O 6 coreless 35678.75 23 x 36.5 x 42.5 mm
Icon Eccentric Diaphragm Pumps

SP 570 EC-L

Eccentric Diaphragm Pump

SP 570 EC-L -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
260 ml/min 10 m H2O -8 m H2O 8 coreless 46395.6 23 x 41 x 49.2 mm
Icon Eccentric Diaphragm Pumps

SP 570 EC-LC-L

Eccentric Diaphragm Pump

SP 570 EC-LC-L -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
300 ml/min 10 m H2O -8 m H2O 8 iron core 48564.5 23 x 41 x 51.5 mm
Icon Eccentric Diaphragm Pumps

SP 570 EC-BL-L

Eccentric Diaphragm Pump

SP 570 EC-BL-L -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
300 ml/min 10 m H2O -8 m H2O 8 brushless 46301.3 23 x 41 x 49.1 mm
Icon Eccentric Diaphragm Pumps

SP 620 EC-L

Eccentric Diaphragm Pump

SP 620 EC-L -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
710 ml/min 15 m H2O -9 m H2O 9 iron core 128851.5 31 x 51 x 81.5 mm
Icon Eccentric Diaphragm Pumps

SP 620 EC-LC-L

Eccentric Diaphragm Pump

SP 620 EC-LC-L -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
780 ml/min 10 m H2O -8 m H2O 8 iron core 120630.3 31 x 51 x 76.3 mm
Icon Eccentric Diaphragm Pumps

SP 620 EC-BL-L

Eccentric Diaphragm Pump

SP 620 EC-BL-L -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
680 ml/min 10 m H2O -9 m H2O 9 brushless 222075 54 x 65.8 x 62.5 mm
Icon Eccentric Diaphragm Pumps

SP 622 EC-BL-L

Eccentric Diaphragm Pump

SP 622 EC-BL-L -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
700 ml/min 15 m H2O -9 m H2O 9 brushless 107783.804 31.7 x 50.9 x 66.8 mm
Icon Eccentric Diaphragm Pumps

SP 625 EC-LC-L

Eccentric Diaphragm Pump

SP 625 EC-LC-L -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
650 ml/min 15 m H2O -9 m H2O 9 iron core 133796 31 x 52 x 83 mm
Icon Eccentric Diaphragm Pumps

SP 620 EC-THp-L

Eccentric Diaphragm Pump

SP 620 EC-THp-L -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
1200 ml/min 10 m H2O -3.5 m H2O 3.5 iron core 225382.5 40.5 x 53 x 105 mm
Icon Eccentric Diaphragm Pumps

SP 620 EC-DUp-L

Eccentric Diaphragm Pump

SP 620 EC-DUp-L -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
1100 ml/min 10 m H2O -9 m H2O 9 iron core 192789 31 x 69.1 x 90 mm
Icon Eccentric Diaphragm Pumps

SP 620 EC-BL-DUp-L

Eccentric Diaphragm Pump

SP 620 EC-BL-DUp-L -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
1000 ml/min 10 m H2O -9 m H2O 9 brushless 282480.8 58.4 x 69.1 x 70 mm
Icon Eccentric Diaphragm Pumps

SP 622 EC-BL-DUp-L

Eccentric Diaphragm Pump

SP 622 EC-BL-DUp-L -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
1050 ml/min 10 m H2O -9 m H2O 9 brushless 162751.921 31.7 x 69.1 x 74.3 mm
Icon Eccentric Diaphragm Pumps

SP 625 EC-LC-DUp-L

Eccentric Diaphragm Pump

SP 625 EC-LC-DUp-L -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
1400 ml/min 15 m H2O -9 m H2O 9 iron core 193860.05 31 x 69.1 x 90.5 mm
Icon Eccentric Diaphragm Pumps

SP 628 EC-DUp-L

Eccentric Diaphragm Pump

SP 628 EC-DUp-L -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
1400 ml/min 15 m H2O -9 m H2O 9 iron core 244199.4 31 x 69.1 x 114 mm
Icon Eccentric Diaphragm Pumps

SP V 700 EC-L (DC)

Eccentric Diaphragm Pump

SP V 700 EC-L (DC) -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
650 ml/min 10 m H2O -4.5 m H2O 4.5 iron core 638711.19 64.3 x 84.9 x 117 mm
Icon Eccentric Diaphragm Pumps

SP V 700 EC-L (AC)

Eccentric Diaphragm Pump

SP V 700 EC-L (AC) -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
600 ml/min 10 m H2O -4.5 m H2O 4.5 shaded pole 1040078.156 98.6 x 75.4 x 139.9 mm
Icon Eccentric Diaphragm Pumps

SP 720 EC-L (AC)

Eccentric Diaphragm Pump

SP 720 EC-L (AC) -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
700 ml/min 15 m H2O -6.5 m H2O 6.5 shaded pole 750321 65 x 95.4 x 121 mm
Icon Eccentric Diaphragm Pumps

SP 725 EC-L (DC)

Eccentric Diaphragm Pump

SP 725 EC-L (DC) -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
1050 ml/min 15 m H2O -6.5 m H2O 6.5 iron core 339571 43 x 74.5 x 106 mm
Icon Eccentric Diaphragm Pumps

SP V 700 EC-THp-L (DC)

Eccentric Diaphragm Pump

SP V 700 EC-THp-L (DC) -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
1000 ml/min 10 m H2O -4.5 m H2O 4.5 iron core 1059907.5 76.5 x 85 x 163 mm
Icon Eccentric Diaphragm Pumps

SP V 700 EC-THp-L (AC)

Eccentric Diaphragm Pump

SP V 700 EC-THp-L (AC) -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
1100 ml/min 10 m H2O -4.5 m H2O 4.5 shaded pole 1444087.712 76.6 x 98.6 x 191.2 mm
Icon Eccentric Diaphragm Pumps

SP 725 EC-THp-L (DC)

Eccentric Diaphragm Pump

SP 725 EC-THp-L (DC) -
													Eccentric Diaphragm Pump
max. Flow max. Pressure max. Suction Height Motor Dimensions (WxLxH)
1400 ml/min 10 m H2O -5 m H2O 5 iron core 710126.55 62.3 x 74.5 x 153 mm

Technology of our Eccentric Diaphragm Liquid Pumps

Diaphragm pumps are used both for pumping liquids and for creating suction or pressurization in liquid systems.

Eccentric diaphragm pumps from Schwarzer Precision are driven by electric motors. An eccentric is attached to the motor shaft, which converts the rotational movement of the motor into an oscillating up and down movement of the connecting rod. This connecting rod in turn moves the diaphragm.

The downwards movement of the diaphragm creates a vacuum, which sucks the pumped medium via an inlet valve into the pump chamber. As soon as the diaphragm moves upwards again, the pumped medium is pressurized. The resulting overpressure closes the inlet valve, at the same time the outlet valve opens and the pumped medium flows out.

The diaphragm, which is circumferentially clamped, separates the pumped medium from both the motor and the ambient air, protecting the motor from the medium. This is particularly important concerning aggressive liquids. Further, the highly sealed pump head ensures that the pumped medium is not contaminated by impurities from outside.

For physical reasons, eccentric diaphragm pumps do not generate a completely uniform liquid flow. Oscillating pressure fluctuations occur, which are referred to as pulsations. For applications which do not tolerate pulsations, we successfully use two-headed pumps. The pressure fluctuations generated by the respective heads are "superimposed" in such a way that an almost pulsation-free flow is achieved.

Our pumps' highly efficient valve designs ensure a long working life, very good suction behaviour and safe handling even when liquids and gases are mixed.

Diaphragm pumps from Schwarzer Precision are extremely robust and reliable. In addition, they are completely maintainance and oil-free. Our diaphragm pumps are ideal for all applications that require a leak-free pump design.


Customising of our Eccentric Diaphragm Liquid Pumps

[Translate to English:] Exzenter-Membranpumpe: Explosionszeichnung und Aufbau

Customising is our standard: all pumps can be adapted exactly to your specific requirements. And that within only a few days. Our modular system allows you to choose from a variety of components and materials.
 

Connections:

Conical fittings, internal threads and manifold connections with free choice of outlet direction.
 

Valves:

Various types, resistant materials, as well as pressure or vacuum optimized versions are available.
 

Diaphragm:

Various types and resistant materials available.
 

Eccentric and connecting rods:

Connecting rods available in different lengths. Stroke selectable. Eccentric bearing as desired.
 

Motor:

Iron core, coreless, shaded pole and brushless motors available. Operating voltage and individual wiring as desired.
 

Pump housing:

With individual mounting options and freely selectable installation positions.
 

In addition to adjusting the hydraulic performance, diaphragm pumps should always be adapted to their specific application regarding required working life. The working life of a diaphragm pump depends to a large extent on the motor used, which in turn has a strong influence on the costs of the pump. In applications with intermittent duty cycles, the pumps are sometimes only used for a few minutes each day. In such cases, inexpensive iron core motors offer an optimal cost-benefit ratio. Particularly high-quality motors ( e.g. coreless and BLDC motors) are available for applications requiring continuous pump operation

We also adapt the plastics and elastomers used to the desired application and the required working life of the pump. Our modular system allows you to choose from a variety of materials. In this way, we can quickly and easily provide pumps for complex applications and very special environments (e.g. pumping aggressive liquids).

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