The GEMU 693 motorized 2/2 way diaphragm valve has a low- maintenance electric actuator incorporating a reversible synchronous motor and a low maintenance toothed belt drive. It is fitted with a manual override and an optical position indicator.

  • Consistent control system and reliable opening and closing action
  • Direct 4-20, (0-20) mA control using the optional module GEMU 1284
  • Optional flow direction and mounting position
  • 20 second operating time provides enhanced flow control capability
  • Available as an option:
    electrical position feedback by means of a potentiometer


Type 693
Nominal Size DN 15 DN 20 DN 25 DN 32 DN 40 DN 50
Body Configuration 2/2-Way
Connection Flanges ANSI class 150 RF, length EN 558-2, series 1 ISO 5752, basic series 1 (ex DIN 3202-1 series F1) Flanges EN 1092/PN10/form B (ex DIN 2501/PN10/form C) length EN 558-1, series 1 ISO 5752, basic series 1 (ex DIN 3202-1, series F1) Spigots - inch Spigots DIN for socket welding Spigots for IR butt welding Spigots for IR butt welding, BCF Union ends with DIN inserts (IR butt welding) Union ends with DIN inserts (sockets) Union ends with inch inserts (sockets)
Valve Body Material ABS In-liner PPH - grey ace. to RAL 7032 In-liner PPH - natural PVC-U PVDF
Diaphragm Material EPDM FPM NBR PTFE/EPDM, PTFE laminated
Supply Voltages/Frequency 24 V 50/60 Hz 120 V 50/60 Hz 230 V 50/60 Hz
Design Operating time approx. 20 sec, PG glands terminal block, with potentiometer Operating time approx. 20 sec, PG glands, terminal block
Ambient Temperature Valve body ABS / PVDF: -10 to 55°C Valve body PVC-U / PP: 5 to 55°C
Storage Temperature -15 to +55 ºC
Power Consumption 10 VA
Rating Continuously rated
Operating Time Standard design: approx. 20 sec.
Protection Class IP 65 ace. to DIN 40050
Cable Gland 2 x PG 13.5

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 diaphragm material.
Temperature of Working Medium1 Valve body ABS: -20 to 60°C Valve body PP: 5 to 80°C Valve body PVC-U: 5 to 60°C Valve body PVDF: -20 to 80°C
  • 1 The permissible operating pressure depends on the working medium temperature.