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Figure 310/312 High Performance Butterfly Valve

Brand: Keystone

High performance applications such as steam, chill water, water, utility lines, gasoline, natural gas, air, oil, jet fuels and process lines.
Features
  • Uninterrupted gasket surfaces help eliminate problems associated with seat retaining screws in the gasket surface and allows use of standard spiral wound gaskets.

  • Unique interference seat design with energized elastomer O-ring allows bi-directional ANSI Class VI shut-off at lower pressures. The seat is further energized by line pressure, providing the same tight bi-directional shut-off at full-rated pressure.

  • Heavy duty circular key holds the seat and retaining ring in place, providing bi-directional, dead-end service at full-rated pressure. This helps eliminate the need for easily corroded and hard-to-remove retention screws.

  • Valve stem designed to API 609 standards is blow-out resistant.

  • Seat retaining ring is housed within the flange gasket ID to eliminate potential emission path.

  • Face-to-face conforms to MSS SP-68 and can be configured to ISO 5752 short.

  • Adjustable packing utilizes unique rocker-shaped gland bridge that compensates for uneven adjustment of gland nuts.

  • Extended neck allows for two inches of clearance for insulation.
  • Specifications

    Brand

    Applications

    • Air Circulation, Air Cooled Heat Exchangers, Facilities & Process Utilities, Plant Air, Balance of Plant

    Approvals & Certifications

    • ABS, CRN

    End Connection

    • Wafer, Lugged

    Material

    • 316 Stainless Steel, Carbon Steel

    Media

    • Water, Vacuum, Liquids, Air

    Operating Temperature

    • Less than 400° F (204° C)

    Pressure Class

    • ASME

    Process Connection Type

    • Class 150 RF

    Seat / Seal Type

    • High Performance

    Shutoff Class

    • Zero Leakage

    Standards

    • ASME B16.34, API 609

    Stem

    • Adjustable Packing

    Valve Size Standard

    • NPS

    Valve Type

    • Butterfly
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