Keystone 320/322 resilient seated butterfly valve

Keystone 320/322 resilient seated butterfly valve

Keystone™ 320 is an economical resilient seated butterfly valve with dimensions according ISO standards for applications requiring shut-off control in both wafer (Figure 320) and lugged (Figure 322) 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 PED
End Connection Lugged, Wafer
Application Air Circulation, Blowers, Balance of Plant, Chillers , Water distribution, Dryers & Evaporators, Cooling Water , Evaporators & Dryers , Filtration
Material Ductile Iron
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 6 / DN 150, NPS 8 / DN 200, NPS 4 / DN 100, NPS 3 / DN 80, NPS 12 / DN 300, NPS 2-1/2 / DN 65, NPS 10 / DN 250
Valve Size Standard DN
Valve Type Butterfly
Media Air, Liquids, Water, Water Glycol
Stem O-ring
  • Bubble-tight shut-off at full rating in both directions.
  • One piece, specially profiled, wafer thin disc stem.
  • Extended body neck allows free access to actuator where pipe insulation has been fitted.
  • The seat and disc are the only two parts in contact with the medium.
  • Face to face dimensions according ISO 3202 Part 3, K1 (ISO 5752 series 20) and DIN EN 558-1, series 20.
  • The F320 wafer version has four flange locating holes for end of line service under certain conditions.
  • Suitable for pneumatic, electric and hydraulic actuation.
  • Standard actuation:
  • Handle (F414) on DN 50-200 valves.
  • Gear operators (F455) on DN 250-300.
  • The F322 lugged version is suitable for bi-directional end of line service.
  • Suitable for pneumatic, electric and hydraulic actuation.

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