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Diaphragm valves

Diaphragm valves are the all-rounders among valves. One of the major advantages is that only two components come into contact with the operating medium: the shut-off diaphragm and the valve body. Thanks to the hermetic separation between actuator and valve body, they are ideally suited for applications with special hygienic requirements.
Three different GEMÜ diaphragm valves for industrial applications.

Key features

  • Universally applicable: Suitable for high-purity to heavily contaminated and abrasive media.
  • Any flow direction: Facilitates installation in the pipework.
  • Hermetic separation between medium and drive: Allows for very good cleanability of all components in contact with the medium.
  • Fluides de service typiques: Neutral and aggressive media, Clean and dirty, abrasive media, Liquids and gases, Slurries, powder and dust
  • Electrically operated diaphragm valve made of stainless steel with welded ends for sterile processes in the food, pharmaceutical, and chemical industries.

    Electromotive 2/2-way diaphragm valve

    GEMÜ 629

    Valve with basic actuator for simple open/close applications

    • Motorized linear actuator for Open/Close applications
    • Safety shut-down integrated
    • Integrated emergency power supply module (optional)
    • Standard optical position indicator and manual override
    • Self-locking spindle actuator
    • Electrical position indicator GEMÜ 1215 (optional)
  • Electrically operated diaphragm valve made of stainless steel with sterile pipe connection – ideal for pharmaceutical, food, and biotechnology applications.

    Electromotive 2/2-way diaphragm valve

    GEMÜ 639

    Valve with universal actuator for open/close or control applications

    • CIP/SIP capable
    • Open/close function or with integrated positioner
    • Parameterisable and controllable via IO-Link
    • On-site or remote end position programming via programming input
    • Various functions integrated (e.g. feedback, stroke limiter, etc.)
  • Electrically operated diaphragm valve with plastic housing and pipe connections – ideal for water treatment, chemical, pharmaceutical, and semiconductor industries.

    Electromotive 2/2-way diaphragm valve made of plastic

    GEMÜ R639

    Valve with universal actuator for open/close or control applications

    • Open/close function or with integrated positioner
    • Parameterisable and controllable via IO-Link
    • On-site or remote end position programming via programming input
    • Various functions integrated (e.g. feedback, stroke limiter, etc.)
  • Electrically operated diaphragm valve with plastic housing and screw connections – ideal for water treatment, chemical and semiconductor industries.

    Electromotive 2/2-way diaphragm valve made of plastic

    GEMÜ R629

    Valve with basic actuator for simple open/close applications

    • Motorized linear actuator for Open/Close applications
    • Safety shut-down integrated
    • Integrated emergency power supply module (optional)
    • Standard optical position indicator and manual override
    • Self-locking spindle actuator
    • Electrical position indicator GEMÜ 1215 (optional)
  • Electrically operated diaphragm valve made of stainless steel with welded ends and integrated control – ideal for the pharmaceutical, biotechnology, and food industries.

    Electromotive 2/2-way diaphragm valve with metal body

    GEMÜ 649

    Valve with premium actuator for high performance and long service life

    • Open/Close function, positioner and process controller
    • Force and speed are variably adjustable
    • Extensive diagnostic functions
    • Operable via web interface eSy-Web or Modbus TCP
    • Hollow shaft drive based on brushless and sensorless technology
    • Various functions of add-on components and accessories are already integrated (e.g. position indicators, stroke limiters, etc.)
    • Hermetic separation between medium and actuator
  • Electrically automated diaphragm valve with position feedback and screw connections – ideal for process automation, water treatment, and chemical process engineering.

    Electromotive 2/2-way diaphragm valve with plastic body

    GEMÜ R649

    Valve with premium actuator for high performance and long service life

    • Hermetic separation between medium and actuator
    • Installation for optimized draining is possible
    • Open/Close function, positioner and process controller
    • Actuation force and actuating speed variably adjustable
    • Operable via web interface eSy-Web and Modbus TCP
    • Extensive functions, such as position feedback, diagnostic functions and opening and closing stroke limitation
  • Manual diaphragm valve made of high-purity plastic with clamp connections – ideal for the semiconductor industry, chemical process engineering, and water treatment.

    Manual 2/2-way diaphragm valve made of high-purity plastic

    GEMÜ C67

    Valve with high chemical resistance for the highest purity standards

    • All wetted parts made of PFA or PTFE
    • High flow rate with low-stress media channelling
    • Optional flow direction
    • Ideally suited for corrosive media
    • Metal-free design
    • Optional version with ECTFE union nut
    • Also available as T valve
    • Clean room production, fulfils SEMI F57
  • Manual diaphragm valve with flange connections, PTFE lining, and plastic housing – ideal for the chemical industry, water treatment, and process engineering.

    Manual 2/2-way diaphragm valve made of metal

    GEMÜ 675

    Robust industrial valve with metal handwheel

    • Various lining materials are available for a wide range of media
    • Customised painting and coating options on request
    • Option: lockable handwheel
    • Suitable for particulate and abrasive media
    • Standard integral optical position indicator