Keystone Figure 990/920 Resilient seated butterfly valve

Keystone Figure 990/920 Resilient seated butterfly valve

Keystone™ Figure 990/920 is a split body, thin disc resilient seated butterfly valve designed for high flow and modulating service. This valve excels in heavy duty applications where corrosion and abrasion resistance is required. It is available in both wafer (Figure 990) and lugged (Figure 920) style.

Any questions?

Anders Praem
Inside Sales Engineer
Phone. 2137 7759

Kenn Gerwien
Area Account Manager East
Phone. 2346 5513

Slawka Pedersen
Inside Sales Manager
Phone. 2137 7702

Certifications CRN
End Connection Wafer, Lip seal
Application Automotive, Beverages, Biofuels, Blowers, Brewing, Initial Food Processing, Product Blending, Winemaking, Processed Foods
Material 316 Stainless Steel, Buna-N, Teflon, Super Duplex, Monel, Hastelloy, Epdm Rubber, Duplex, Cast Iron, Ductile Iron, Titanium
Operating Temperature Up to 250 F (120 C)
Pressure Class ASME
Process Connection Type 150RF
Seat/Seal Type Resilient
Shutoff Class Zero Leakage
Standards API 609, ASME B16.34
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 inch, 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
Media Specialty Gases, Liquids, Air, Inert Gas, Water, Air
Stem O-ring
  • 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.

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