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ISORIA 20/25 Butterfly valve

Butterfly valveISORIA 20/25

Centred-disc butterfly valve with ISO 5211 compliant square shaft end, 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

  • The spherical contact between valve disc and liner ensures durable and permanently tight shut-off.
  • Splined or keyed connection between shaft and valve disc: dry shaft, no contact with fluid handled
  • Sealing to atmosphere is ensured even when the actuator has been removed.

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

Documents

Title
Format
Size
Last change
2-page product description ISORIA (8446.022_EN)PDF1.293/24/2023
Title
Format
Size
Last change
Declaration of conformity - PED (8401.8502_EN)PDF0.385/25/2023
Declaration of conformity - ATEX (8401.8501_EN)PDF0.245/31/2023
Declaration of conformity - M Directive (8401.8505_EN)PDF0.233/14/2022
Declaration of conformity - AD 2000 (8401.8507_EN)PDF0.23/14/2022
Declaration of conformity - UKCA (8401.85027_EN)PDF1.56/1/2023
Title
Format
Size
Last change
Operating instructions - ISORIA/MAMMOUTH (8449.8_EN)PDF3.325/23/2023
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)RTF0.063/29/2023