Keystone Model ParaSeal Butterfly Valves

Keystone Model ParaSeal Butterfly Valves

The Keystone™ ParaSeal range features a proven disc, shaft and seat arrangement designed for use in high pressure and high velocity applications.

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 DVWG, PED
End Connection Flanged, Lugged, Wafer
Application Desalination, Water distribution, Chillers , Balance of Plant, Water Treatment
Body Design Short Pattern
Material Epdm Rubber, Duplex, Ductile Iron, Cast Iron, Carbon Steel, Buna-N, Bronze, 316L Stainless Steel, 316 Stainless Steel, 304 Stainless Steel, Aluminum Bronze
Operating Temperature Less Than 200 C
Pressure Class ASME, PN
Process Connection Type 125FF, 150RF, PN16, PN25, 150FF
Seat/Seal Type Resilient
Shutoff Class Zero Leakage
Valve Size NPS 6 / DN 150, NPS 4 / DN 100, NPS 3 / DN 80, NPS 24 / DN 600, NPS 2-1/2 / DN 65, NPS 20 / DN 500, NPS 2 / DN 50, NPS 18 / DN 450, NPS 16 / DN 400, NPS 14 / DN 350, NPS 12 / DN 300
Valve Size Standard NPS, DN
Valve Type Butterfly
Media Air, Air, Inert Gas, Water
Stem O-ring
  • Available in wafer, lugged and double flanged
  • One piece body design acc. ISO 5752 series 20 (DIN 3202 K1)
  • Suitable for severe vacuum and up to 25 bar bubble tight shut off
  • The field replaceable seat fully isolates the body and shaft from the media
  • Bed grooved seat construction for tight shut off at full rated pressure, also for end of line service
  • Suitable for Bördel and slip-on flanges
  • A molded-in O-ring in the seat face for flange sealing. No flange gaskets required
  • Lenticular shaped disc to improve flow capacity
  • Splined, squared or key shaped disc/shaft connection
  • Dry shaft design
  • PTFE lined bearings to minimize friction
  • Actuator flange acc. ISO 5211

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