Solenoid diaphragm pumps of type C204.1, controllable

Flow rate from 0,4 l/h to 35 l/h, counter pressures up to 10 bar

sera Solenoid Diaphragm Pumps are designed for the exact dosing of liquid media in all industrial fields. The dosing control is performed process-bound for the most part.

Product documentation:



Our team is there for you!

Do you have any questions about this item or need more information?

Contact us!

Capability characteristics

  • Directly controllable
  • PROFIBUS-DP-Interface
  • High dosing accuracy
  • Long service life of diaphragms*
  • High qualitiy materials
  • Linear control characteristic
  • Low maintenance
  • Low operational costs
  • Leakage-free
  • Unlimitedly safe to run dry
  • Easy to operate
  • Low weight

*in comparison with previous commercially available drive diaphragms


Flow free mediums with the following characteristics:

  • aggressive
  • abrasive
  • radioactive
  • flammable
  • odorous
  • toxic


Design and function

The liquid is conveyed by a deformable drive diaphragm. This membrane is connected via a connecting rod fixed to the drive magnet and so is deflected to the suction and pressure strokes.

Solenoid diaphragm pumps consists of the follwowing (main) components:

  • Drive housing with solenoid
  • Elektronics with connection on the control panel
  • Built-in pump
  • Pump body
  • Manual vent valve
  • Suction valve and pressure valve

Materials and options

A suitable material is available for each dosing medium!

  • Pump body and Valves: PP-FRP, PVDF-FRP, PVC, PP, PVDF, 1.4571
  • Valve balls: PTFE, 1.4401, Al2O3
  • Valve seals: EPDM, FPM, FEP-covered, FFKM1)
  • Working diaphragm: PTFE-faced
  • Manual vent valve1): PP-FRP, PVDF-FRP

1) only with pumps in FRP-execution, 1,2l/h till 14 l/h
Please ask us for any material required but not mentioned here

Available designs

Type Q (at 50 Hz) p/max.
C204.1-2,4e up to 2,4 l/h max. 10 bar
C204.1-7,0e up to 7,0 l/h max. 10 bar
C204.1-10e up to 10 l/h max. 6 bar
C204.1-35e up to 35 l/h max. 1,5 bar