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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

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