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Keystone Butterfly Valve, Series GRW/GRL

Series GRW/GRL Butterfly Valve

Brand: Keystone
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A heavy duty industrial resilient seated butterfly valve GRW - Wafer body design, GRL - Lugged body design.
Features
  • Wafer and lugged body design with face-to-face dimension, according to EN 558 Series 20 and API 609.

  • Designed according to EN 593 and API 609.

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

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

  • A secondary shaft sealing provides back-up safety.

  • A molded-in O-ring in the seat for flange sealing eliminates the need for gaskets.

  • Shaft seals prevent moisture penetrating into the shaft area.

  • The two piece shaft allows for a thin disc and provides minimal obstruction to flow (up to DN 300/ NPS 12).

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

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

  • Extended body neck allows for pipe insulation.

  • Top and bottom shaft bearings for optimized support and minimum friction and decreased torque.

    • Specifications

    Brand

    Approvals & Certifications

    • ABS, CRN, CUTR, PED, SIL Capable

    End Connection

    • Lugged, Wafer

    Material

    • Ductile Iron, Duplex, EPDM Rubber, Monel, Nylon, Super Duplex, 316L Stainless Steel, 316 Stainless Steel, 304 Stainless Steel, Buna-N, Aluminum Bronze

    Media

    • Vacuum, Water, Air, Fuel Oil, Hot Water, Liquids

    Operating Temperature

    • Less than 150° C

    Pressure Class

    • PN, ASME

    Process Connection Type

    • 150 RF, PN 16

    Seat / Seal Type

    • Resilient

    Shutoff Class

    • Zero Leakage

    Standards

    • API 609, ASME B16.34

    Stem

    • O-Ring

    Valve Size

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

    Valve Size Standard

    • DN, NPS

    Valve Type

    • Butterfly

    Documentation

    Data Sheets

    Product Manuals

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