The GEMU 225 servo assisted 2/2-way plastic solenoid valve has a high performance coil which is hermetically separated from the medium by means of a flexible PTFE bush. The coil is assisted by a servo-control piston mechanism. The valve seal is carried in a pendulum bearing. The valve seal is carried in a pendulum bearing. The electrical connection is made via a plug complying with DIN EN 175301-803. The DC design includes a rectifier in the terminal enclosure, so that the valve can be used with an AC supply. The valve has a manual override and an optical position indicator as standard.

  • Suitable for inert and corrosive liquids and gases
  • Corrosion-resistant, therefore suitable for water treatment plants, washing and cleaning installations, the food and foodstuffs industries, the chemical industry, electroplating, titration equipment, for the photographic industry and for laboratory, analytical and medical apparatus.
  • Sizes DN 25 and upwards have additional forced operation
  • Hermetic separation of medium and actuator
  • Damped action on closure
  • Manual override allows the valve to be opened and closed during a power failure
  • Optical position indicator


Type 225
Nominal Size 15 mm20 mm25 mm32 mm40 mm50 mm
Body Configuration 2/2-way body
Connection Solvent cement spigots, DIN Solvent cement spigots, inch Union ends with DIN insert (socket)
Valve Body Material PVC-U PVDF
Seal Material EPDM FPM
Control Function Normally closed
Voltage 120 V AC 230 V AC 24 V AC 24 V DC
Frequency 50/60 Hz DC
Max. Ambient Temperature 40 ºC
Rating Continuously rated
Protection Class to EN 60529 IP 65

Working Medium

Working Medium Corrosive, inert, gaseous and liquid media which have no negative impact on the physical and chemical properties of the body and seal material.
Max. Perm. Temperature of Working Medium 60 ºC


N/A Installation note
Caution: DC solenoids are designed for unsmoothed voltages, e.g. as obtained from a bridge rectifier.

Wiring note
Special wiring on request. When using electronic switches and additional wiring avoid inadmissible residual currents by proper design.