ISORIA 20/25 Butterfly valve
Butterfly valve

ISORIA 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.
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Main Applications

  • Cooling circuits
  • Seawater desalination/reverse osmosis
  • Flue gas desulphurisation
  • Pulp and paper industry
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Technical Data

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

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

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Documents

TitleFormatSizeLast change
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product brochure (0518.026_EN)pdf4.0710/6/2020
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ATEX (8610.81_EN)pdf0.412/17/2020
Operating instructions - ISORIA/MAMMOUTH (8449.8_EN)pdf1.284/15/2020
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Type series booklet ISORIA 20/25 (8447.5_EN)pdf7.8311/14/2019
Type series booklet ISORIA 20 (8446.1_EN)pdf0.895/24/2019
TitleFormatSizeLast change
ISORIA 20/25 (8447.521_EN)pdf0.0110/10/2019

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 material8136
  • 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

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