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Shut-off valves

For large pipework dimensions, our butterfly valves offer you a reliable solution for the safe control of liquids and gases. With the right combination of materials, they not only ensure efficient handling of mechanically pure liquids, but also of slightly abrasive media - for maximum process reliability and durability.
Various GEMÜ butterfly valves, manual and automated.

Key features

  • Wide range of nominal widths: Offers maximum flexibility for a wide variety of pipe sizes.
  • Very short overall length: Saves space and facilitates integration into compact systems.
  • Fast positioning times: Enable fast reaction times and increase process dynamics.
  • Simple installation and low maintenance: Reduce downtimes and lower operating costs.
  • Fluides de service typiques: Liquids such as water, oils, acids, alkalis, surfactants, heating and cooling agents, Gases such as steam, air, nitrogen, natural gas, noble gases, vapours, Solids such as bulk material
  • Centric butterfly valve with stainless steel disc, elastic seal and flange connection – ideal for water treatment, chemical and process engineering.

    Butterfly valve with free shaft end made of metal

    GEMÜ R480

    Soft-sealing, centrally mounted butterfly valve

    • Low torques thanks to PTFE coated bushes
    • Bubble tight sealing, in accordance with EN 12266-1/P12, leak rate A
    • Liner material is easy to read when installed
    • Sleek disc design for higher Kv values
    • Robust body coating comparable to ISO 12944-6 C5
  • Centric butterfly valve with stainless steel disc, elastic seal and flange connection – ideal for water treatment, chemical and process engineering.

    Butterfly valve with free shaft end made of metal

    GEMÜ D480

    Soft-seated, centrally mounted butterfly valve with special materials

    • Available in large nominal sizes
    • Bubble tight sealing, in accordance with EN 12266-1/P12, leak rate A
    • Special materials for disc, seal and valve body
    • Vulcanizable liner
    • Abrasion-resistant version possible
  • Stainless steel butterfly valve with female thread connection and standard shaft mount – ideal for water treatment, chemical and process engineering.

    Butterfly valve with free shaft end made of metal

    GEMÜ K415

    Soft-sealing, centrally mounted stainless steel flap in small nominal sizes

    • Available in small nominal sizes
    • Suitable for vacuum applications and low temperatures
    • High-quality butterfly valve made from stainless steel or brass
    • Compact and robust body
  • High-performance stainless steel butterfly valve with PTFE lining and flange connection – ideal for the chemical, pharmaceutical, and food industries.

    Butterfly valve with free shaft end made of metal

    GEMÜ R470

    PTFE-sealing, double-eccentric high-performance butterfly valve

    • High-performance butterfly valve with double-eccentric construction in order to separate the disc directly from the seat (gasket), thereby reducing friction and extending the service life
    • Continuous shaft with temperature resistant graphite bearing and PTFE gland packing for readjustment in operation for minimized leakage, even at low pressures
    • Antistatic fixture for ATEX area
    • Bubble tight sealing, in accordance with EN 12266-1/P12, leak rate A
  • Butterfly valve with PTFE lining and flange connection – ideal for the chemical, pharmaceutical, and food industries with high corrosion resistance requirements.

    Butterfly valve with free shaft end made of metal

    GEMÜ 490

    PTFE-sealing, centrally mounted butterfly valve

    • Suitable for chemically corrosive media
    • Bubble tight sealing, in accordance with EN 12266-1/P12, leak rate A
    • High-quality selection of materials can be combined in different ways
    • High level of plant reliability thanks to one-piece shaft and spring-washer-supported seal system
    • Long service life thanks to shaft bearings and special disc and liner geometry
  • Plastic butterfly valve with standard shaft connection and flange connection – ideal for water treatment, chemical, and industrial applications.

    Butterfly valve with free shaft end made of plastic

    GEMÜ D450

    Soft-sealing, centrally mounted butterfly valve

    • Excellent corrosion protection
    • UV resistant
    • Disc outlet dimension designed on plastic piping
    • Simple installation
    • Low pressure loss
    • Low weight
    • Low torque
  • Plastic butterfly valve with union nuts and shaft connection – ideal for water treatment, chemical and process engineering.

    Butterfly valve with free shaft end made of plastic

    GEMÜ K410

    Soft-sealing, centrally mounted butterfly valve in small nominal sizes

    • Low weight
    • Corrosion resistant plastic body
    • Simple installation with union nut
    • Universal fitting
  • Electrically operated butterfly valve with PTFE lining, stainless steel disc, and flange connection – ideal for the chemical, pharmaceutical, and food industries.

    Electromotive metal shut-off damper

    GEMÜ 498

    PTFE-sealing, centrally mounted butterfly valve

    • Suitable for chemically corrosive media
    • Bubble tight sealing, in accordance with EN 12266-1/P12, leak rate A
    • High-quality selection of materials can be combined in different ways
    • High level of plant reliability thanks to one-piece shaft and spring-washer-supported seal system
    • Long service life thanks to shaft bearings and special disc and liner geometry
    • Wide choice of motorized actuator types