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NeoSeal Lined Butterfly Valve

Brand: Neotecha

A PTFE lined solution according ISO 5752/5 short (EN 558-1/T5) with various corrosion resistant disc materials
Features
  • The pressure to keep the two sealing surfaces of the stem seal together is provided by an upper and lower set of Belleville springs resulting in a superior stem seal, which is TA-Luft / VDI 2440 approved.
  • The elastomer back-up pads behind the liner ensure a tight fit around the disc, for a bubble tight shut-off.
  • The liner provides a wide flange sealing surface.
  • A one piece thin disc stem lined with 3 mm molded PFA providing high Kv values.
  • The liner and disc are the only two valve parts in contact with the medium.
  • Primary shaft sealing by preloaded contact between disc and liner hub.
  • Secondary shaft seal by oversizing the shaft diameter in relation to the shaft hole in the liner.
  • Vacuum tests with helium with pressures less than 20 Pa absolute (0.2 mbarA).
  • Optional TFM lining available for extremely demanding applications.
  • Integral body locating holes to ensure perfect centering of the valve.
  • Actuator flange and stem dimensions acc. ISO 5211.
The liner and disc are molded and machined to close tolerances to provide

  • low torque.
  • less stress and deformation during opening and closing.

Specifications

Brand

Approvals & Certifications

  • CUTR, CE, Fugitive Emission, GOST

Body Design

  • Short Pattern

End Connection

  • Wafer

Material

  • Ductile Iron

Media

  • Aggressive Liquids & Gases

Operating Temperature

  • Less than 200° C

Pressure Class

  • PN

Seat / Seal Type

  • Lined

Valve Size

  • NPS 2 / DN 50, NPS 3 / DN 80, NPS 24 / DN 600, NPS 10 / DN 250, NPS 1-1/2 / DN 40, NPS 12 / DN 300, NPS 14 / DN 350, NPS 16 / DN 400, NPS 18 / DN 450, NPS 2-1/2 / DN 65, NPS 4 / DN 100, NPS 20 / DN 500, NPS 8 / DN 200, NPS 6 / DN 150

Valve Size Standard

  • DN

Valve Type

  • Butterfly
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