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

Specs

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

Features

  • 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