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Model OptiSeal F14­F17 Butterfly Valve

Brand: Keystone

A resilient seated butterfly valve for general-purpose applications.
Features
  • Top bushing absorbs actuator side thrust loads.

  • Actuator flange acc. ISO 5211.

  • High solid, glossy, silicone free, paint system ensuring excellent corrosion resistance.

  • Extended body neck allows pipe insulation.

  • Body locating holes ease installation and centering between the flanges.

  • Rounded polished disc edge gives full concentric sealing, lower torques, longer seat life and bubble-tight shut-off.

  • The seat is field replaceable and fully isolates the body and stem from the flow.

  • Primary stem sealing exceeds the pressure rating of the valve and prevents leakage through shaft area to atmosphere.

  • A secondary shaft sealing provides back‑up safety.

  • No flange gaskets required.

  • High Cv value.

  • Top and bottom shaft bearings for optimized support and minimum friction in all body materials up to DN 300, except cast iron.
  • Specifications

    Brand

    Applications

    • Winemaking, Beverages, Automotive, Air Circulation

    Approvals & Certifications

    • CUTR, SIL Capable, PED

    End Connection

    • Wafer, Lugged

    Material

    • Super Duplex, Hastelloy, EPDM Rubber, Duplex, Cast Iron, Carbon Steel, Buna-N, 316L Stainless Steel, 316 Stainless Steel

    Media

    • Liquids, Water, Hot Water, Liquid, Air

    Operating Temperature

    • Up to 250° F (120° C)

    Pressure Class

    • PN

    Process Connection Type

    • PN 16

    Seat / Seal Type

    • Resilient

    Shutoff Class

    • Zero Leakage

    Stem

    • O-Ring

    Valve Size

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

    Valve Size Standard

    • DN

    Valve Type

    • Butterfly
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