Keystone Model OptiSeal F14F17 Butterfly Valves

Keystone Model OptiSeal F14F17 Butterfly Valves

A resilient seated butterfly valve for general purpose application.

Certifications CUTR, SIL capable, PED
End Connection Wafer, Lugged
Application Winemaking, Beverages, Automotive, Air Circulation
Material Super Duplex, Hastelloy, Epdm Rubber, Duplex, Cast Iron, Carbon Steel, Buna-N, 316L Stainless Steel, 316 Stainless Steel
Operating Temperature Up to 250 F (120 C)
Pressure Class PN
Process Connection Type PN16
Seat/Seal Type Resilient
Shutoff Class Zero Leakage
Valve Size NPS 20 / DN 500, NPS 10 / DN 250, NPS 8 / DN 200, NPS 6 / DN 150, NPS 4 / DN 100, NPS 3 / DN 80, NPS 24 / DN 600, NPS 2-1/2 / DN 65, NPS 18 / DN 450, NPS 16 / DN 400, NPS 14 / DN 350, NPS 1-1/2 / DN 40
Valve Size Standard DN
Valve Type Butterfly
Media Liquids, Water, Hot Water, Liquid, Air
Stem O-ring
  • Top bushing absorbs actuator side thrust loads.
  • Actuator flange acc. ISO 5211.
  • High solid, glossy, silicone free, paint system ensuring excellent corrosion resistance.
  • Extended body neck allows pipe insulation.
  • Body locating holes ease installation and centering between the flanges.
  • Rounded polished disc edge gives full concentric sealing, lower torques, longer seat life and bubble-tight shut-off.
  • The seat is field replaceable and fully isolates the body and stem from the flow.
  • Primary stem sealing exceeds the pressure rating of the valve and prevents leakage through shaft area to atmosphere.
  • A secondary shaft sealing provides back‑up safety.
  • No flange gaskets required.
  • High Cv value.
  • Top and bottom shaft bearings for optimized support and minimum friction in all body materials up to DN 300, except cast iron.

Questions about the product?

Fill out the form below and we vill contact you with answers to your qusestions