Butterfly Valve Specification

• Subtype
  Triple Offset
  • ‘Triple Eccentric Butterfly Valves’- also commonly called ‘Triple Offset Butterfly Valves’.  This version has the stem set behind the vertical axis but also offset to one side of the centreline of the disc. This allows for friction free sealing at the final point of closure and no distortion of the seat. This design allows for laminated or solid metal seats, meaning better suitability for more severe service applications.

• Design Codes

• API 609, BS EN 593
• Body Designs
  Double Flanged, Wafer Lugged, Through Drilled, Threaded, Wafer Non-Lugged
• Size Range
  2″ – 48″
• Pressure Ratings
  150 – 2500lb
• End Connections
  Wafer, Flanged (All Configurations)
• Body Materials
  Ductile Iron, Nickel Aluminium Bronze, Carbon Steel, LTCS, Stainless Steel, Duplex, Super Duplex, Inconel, Titanium, Special Alloys
• Trim Materials
  Nickel Aluminium Bronze, Stainless Steel, Duplex, Monel, Special Alloys
• Seat Materials
  PTFE, RPTFE, Metal to Metal
• Operation
  Lever, Gear Box or Actuated
• Options
  Cryogenic, Lagging Extension, Pit/Buried Service, Double Block and Bleed