Home Products Gas and air pumps Eccentric Diaphragm Pumps Series 200 250 EC
gas detector EC Eccentric Diaphragm Pumps

250 EC
Eccentric Diaphragm Pumps

  • Mini pumps specially designed to pump small volumes.
  • Minimal size, low power consumption, high precision controllability.
  • Also deliverable with special long life ball bearings, as in the SP 250 EC-DB (“double ball”).
  • Made for portable machines, especially for gas analysis.
  • Gas-tight pump heads allow the unaltered delivery of the media.
  • Specific materials are also suitable for problematic gases.
  • Because of our modular construction system, we can customize the pumps to fit all requirements. Without increasing developing costs.

Operating voltage 5 Vdc

Pneumatic performance

free flow at outlet: 420 ml/min
at 100 mbar: 220 ml/min
max. pressure: 400 mbar
at -100 mbar: 220 ml/min
max. vacuum: -450 mbar


motor type (standard): skew wound
motor type (optional): double ball bearing
max. nominal current: 90 mA


pump head (standard): PPS
pump head (optional): on request
valves (standard): EPDM
valves (optional): FKM
diaphragm (standard): EPDM
diaphragm (optional): FKM

Dimensions + weight

dimensions: 29.6 x 16 x 25 mm
weight: 19 g

Performance diagram

Performance diagram


gas analyzers
gas and
air pumps
Logo: Schwarzer Precision GmbH + Co. KG

Schwarzer Precision GmbH + Co. KG, Am Lichtbogen 7, 45141 Essen, Germany · Phone: +49 (0)201 / 31 697 - 0