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Keystone Figure Butterfly Valve, 990/920

Figure 990/920 Butterfly Valve

Brand: Keystone
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A split body thin disc valve for high flow and modulating service. Figure 990 - Wafer body design, Figure 920 - Lugged body design.
Features
  • One-piece, thin profile, disc stem provides minimum obstruction to flow, resulting in highest Cv, lowest pressure drops and best control characteristics.
  • Rounded polished disc edge gives full concentric sealing, lower torques, longer seat life and tight shut-off.
  • Triple function, resilient seat isolates body and stem from line media, provides drop-tight shut-off of line media at full-rated pressure and provides positive flange sealing, eliminating the need for flange gaskets.
  • Heavy duty, corrosion resistant top bushing provides upper stem support, absorbs actuator sideloading and extends valve cycle life.
  • Bi-directional, self-adjusting double V-cup stem seals prevent external contaminants from entering the valve.
  • Split body design enables easy field replacement of seat and disc/stem and permits direct mounting of Keystone actuators without the use of couplings or brackets.

Specifications

Brand

Approvals & Certifications

  • CRN

End Connection

  • Wafer, Lip Seal

Material

  • 316 Stainless Steel, Buna-N, Teflon, Super Duplex, Monel, Hastelloy, EPDM Rubber, Duplex, Cast Iron, Ductile Iron, Titanium

Media

  • Specialty Gases, Liquids, Air, Inert Gas, Water, Air

Operating Temperature

  • Up to 250° F (120° C)

Pressure Class

  • ASME

Process Connection Type

  • 150 RF

Seat / Seal Type

  • Resilient

Shutoff Class

  • Zero Leakage

Standards

  • API 609, ASME B16.34

Stem

  • O-Ring

Valve Size

  • NPS 1-1/2 / DN 40, NPS 14 / DN 350, NPS 16 / DN 400, NPS 8 / DN 200, NPS 18 / DN 450, NPS 2 / DN 50, NPS 20 / DN 500, NPS 6 / DN 150, NPS 10 / DN 250, NPS 1 / DN 25, 5”, NPS 4 / DN 100, NPS 12 / DN 300, NPS 2-1/2 / DN 65, NPS 3 / DN 80

Valve Size Standard

  • NPS

Valve Type

  • Butterfly

  • Food And Beverage
  • Pharmaceutical
  • Pulp And Paper
  • Mining
  • Oil And Gas
  • Power

Documentation

Data Sheets

Product Manuals

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