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GEMÜ 648

Motorized diaphragm valve

  • Description
  • Features
  • Technical specifications

The GEMÜ 648 2/2-way diaphragm valve has a motorized linear actuator. The motor has a plastic housing and is designed for DC and AC operating voltages. The integrated gear translates the rotary motor movement into a linear movement. The actuator is available as an on/off version or with an integrated positioner and additional process controller. The membrane keypad and the backlit display are at the front of the unit and easily accessible. The integrated electronic system enables easy setting of actuating speed, control parameters and other functions.

  • Can be combined with virtually all GEMÜ diaphragm valve bodies
  • 2-colour LEDs with good visibility for indication of end position and travel direction
  • Extensive integrated diagnostic functions
  • Simple commissioning and versatile operating facilities- Membrane keypad at the front of the unit- PC connection with Internet browser- Fieldbus interfaces, e.g. Profibus DP- e.sy-com interface for connecting a Bluetooth module or industrial modem
  • Connection: Spigot
  • Actuator: Motorized
  • Body material: 1.4408, PFA lined; 1.4408, investment casting; 1.4435, forged body; 1.4435, investment casting; ABS; EN-GJL-250; EN-GJS-400-18-LT (GGG 40.3), PFA lined; EN-GJS-400-18-LT (GGG 40.3), PP lined; EN-GJS-400-18-LT, hard rubber lined; EN-GJS-500-7, PFA lined; EN-GJS-500-7, PP lined; PP; PP inliner / outliner; PVC; PVDF
  • Max. operating pressure: 10 bar
  • Max. media temperature: 150 ° C
  • Nominal sizes: DN 15 (1/2''); DN 20 (3/4''); DN 25 (1''); DN 32 (1 1/4''); DN 40 (1 1/2''); DN 50 (2''); DN 65 (2 1/2''); DN 80 (3''); DN 100 (4'')
  • Control valve

Product video

How diaphragm valves with metal valve bodies work

00:29 min
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Online since 16.09.2015