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Electromotive metal shut-off damper

GEMÜ 428

ConfigureTechnical data sheet
Electrically operated stainless steel butterfly valve with female thread and status indicator – ideal for chemical, water treatment, and industrial processes.

Soft-seated, centrally mounted stainless steel butterfly valve in small nominal sizes

Product information

The GEMÜ 428 soft-seated, centric butterfly valve made of stainless steel is operated by an electric motor. A manual override and an optical position indicator are integrated as standard. With its rounded and polished disc edges, the butterfly valve is optimized for frequent cycle duties. The surface of the butterfly valve can be further finished.

Key features

  • Available in small nominal sizes
  • Suitable for vacuum applications and low temperatures
  • High-quality shut-off damper made of stainless steel
  • Compact and robust body
Electrically operated stainless steel butterfly valve with female thread and status indicator – ideal for chemical, water treatment, and industrial processes.

Technical features

Parameters
Value
Media temperature
-20 to 160 °C
Ambient temperature
-10 to 60 °C
Operating pressure
0 to 10 bar
Nominal sizes
DN 15 to 50
Connection types
Clamp
Spigot
thread
Connection standards
ASME
DIN
EN
ISO
SMS
Housing materials
1.4408, investment casting material
Liner materials
EPDM
FKM
Silicone
Disc materials
1.4408, investment casting material
Supply voltage
12 V AC, 50/60 Hz
12 V DC
24 V AC, 50/60 Hz
24 V DC
90° operating time
4 Up to 100 s
Protection class
IP 65, 66, 67, 68
Conformities
EAC
FDA

Downloads

16 Results
  • Datasheet GEMÜ 428

    pdf, 3.25 MB, EN

  • Produktbroschüre Absperrklappen aus Edelstahl oder Messing 411, 415 und 428

    pdf, 380 KB, DE

  • Product certificate RoHS - GEMÜ product collection

    pdf, 305 KB, DE/EN

  • Beiblatt / Supplement GEMÜ R488, 488, D488, 498, 428, 478, 728, 768, 748, B52, B54, B56, 9428, 723, 423 PE O4

    pdf, 90 KB, DE/EN

  • Product certificate oil grease free - GEMÜ product collection K nr 0107

    pdf, 121 KB, DE/EN

  • Certificat du produit machinery - GEMÜ product collection

    pdf, 341 KB, FR

  • Spezifikationsblatt_Absperrklappen_de

    pdf, 1.26 MB, DE

  • Produktzertifikat machinery - GEMÜ product collection

    pdf, 315 KB, DE

  • Fiche de spécifications_Vannes papillon.fr

    pdf, 779 KB, FR

  • Datenblatt GEMÜ 428

    pdf, 3.24 MB, DE

  • Specification sheet_butterfly_valves.en

    pdf, 804 KB, EN

  • Betriebsanleitung / Operating instructions GEMÜ 428

    pdf, 2.10 MB, DE/EN

Suitable services

  • Expert knowledge for your applications

    Training

    Deepen your expertise in valve technology and plant control. Our training courses provide practical content to help you design processes that are safe, efficient, and compliant with standards.

  • Ensure longevity and reliability

    Maintenance

    Regular maintenance ensures consistently stable processes. Our service teams ensure the availability of your systems and reliably extend the service life of your components.

  • Fast, efficient, and precise

    Repair

    When it comes to repairs, every minute counts. Our experts analyze, repair, and test reliably - using original spare parts, technical precision, and a focus on minimizing downtime.

  • Intelligent networking with GEMÜ CONEXO

    Digital support

    CONEXO makes maintenance digital: RFID technology and mobile apps enable the unique identification of your components and document maintenance processes transparently.