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Series V11 Butterfly Valve

Brand: Keystone

The Figure V11 is a double flanged type, fully rubber lined valve for the marine industry.
Features
  • The concentric disc offers bi-directional service and allows high Cv values with its symmetric shape.

  • Primary seal is formed by the disc hub and stem top, the seat contact exceeds the pressure rating of the valve.

  • Secondary stem seal is suitable for high pressure and is self-adjusting.

  • Disc hub edge are rounded and hand polished to provide full concentric sealing without seat obstruction to flow, combined with maximum seat life.

  • Replacement seat isolates the stem and body parts from the stream and also serves as the flange gasket.

  • Molded-in O-ring provides positive flange sealing and eliminates the need for gasket.

  • Double flanged body design specified according to JIS F7480.

  • Heavy duty top bushing absorbs side thrust and torque loads.

  • Stainless steel disc screws allow quick and easy disassembly.

  • Factory testing of every valve at full rating ensures 100% tight shut-off.

  • Type approved by various major shipping class.
  • Specifications

    Brand

    Applications

    • Ballast Control

    Approvals & Certifications

    • ABS

    Body Design

    • Short Pattern

    Material

    • Carbon Steel, Cast Iron

    Media

    • Fuel Oil, Liquid, Liquids

    Operating Temperature

    • Up to 250° F (120° C)

    Pressure Class

    • PN

    Seat / Seal Type

    • Resilient

    Shutoff Class

    • Zero Leakage

    Stem

    • O-Ring

    Valve Size

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

    Valve Size Standard

    • DN

    Valve Type

    • Butterfly
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