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ISORIA 20/25 Butterfly valve

Butterfly valveISORIA 20/25

Centred-disc butterfly valve, sealed by elastomer liner, with lever or manual gearbox, pneumatic, electric or hydraulic actuator. Semi-lug body (T2), full-lug body (T4) or U-section body with flat faces (T5). Body types T2, T4 and T5 are suitable for downstream dismantling and dead-end service with counterflange. Connections to EN, ASME, JIS.
See all documents and downloads

Main Applications

  • Cooling circuits
  • Seawater desalination/reverse osmosis
  • Flue gas desulphurisation
  • Paper industry / pulp industry

Technical Data

  • Nominal pressurePN 20, PN 25
  • Max. nominal sizeDN 1000
  • Max. allowed fluid temperature200 °C

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Benefits

  • Spherically machined disc with rounded sealing contour
    • ensures durable and permanently tight shut-off
  • Splined or keyed connection without play between shaft and valve disc

    Technical Data

    • FunctionShut off/control flow
    • Connection typeInstallation between flanges,
      Flange
    • Design concept DriveWith electric actuator,
      With handwheel,
      Hydraulic,
      Lever,
      With pneumatic actuator,
      Without
    • Casing materialEN-GJS-400-15/A536 GRADE 60-40-18
    • Nominal pressurePN 20,
      PN 25
    • Max. nominal sizeDN 1000
    • Min. nominal sizeDN 32
    • Max. allowed fluid temperature200 °C
    • Min. allowed fluid temperature-10 °C
    • Valve body typeSemi-lug type,
      Full-lug type, flat faces,
      Full-lug type, raised faces,
      U-shaped body, flat faces

    Sectional Drawings

    Documents

    Title
    Format
    Size
    Last change
    2-page product description ISORIA (8446.022_EN)PDF1.298/23/2022
    Title
    Format
    Size
    Last change
    Declaration of conformity - ATEX (8401.8501_EN)PDF0.248/23/2022
    Declaration of conformity - M Directive (8401.8505_EN)PDF0.233/14/2022
    Declaration of conformity - PED (8401.8502_EN)PDF0.448/23/2022
    Declaration of conformity - AD 2000 (8401.8507_EN)PDF0.23/14/2022
    Title
    Format
    Size
    Last change
    Operating instructions - ISORIA/MAMMOUTH (8449.8_EN)PDF3.373/3/2023
    ATEX (8610.81_EN)PDF1.093/14/2022
    Title
    Format
    Size
    Last change
    Actuator selection ISORIA 20/25 (8447.15_EN)PDF910/18/2021
    Type series booklet Coating systems (8425.20_EN)PDF2.183/3/2023
    Type series booklet ISORIA 20/25 (8447.5_EN)PDF8.673/2/2023
    Title
    Format
    Size
    Last change
    ISORIA 20/25 (8447.521_EN)PDF0.0110/18/2021