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Flowserve-NAF-Triple Offset Butterfly Valves - Torex

High Performance Butterfly Valves - Torex


High-performance, triple-offset, metal- or soft-seated butterfly valve frequently used for isolation or on-off applications, but equally suitable for control, especially on high-flow, low-pressure applications.


  • General Industry
  • Chemicals
  • Water
  • Power

industry sectors

  • Pulp & Paper
  • Steel & Primary Metals
  • Food & Beverage
  • Corn Wet Milling & Ethanol
  • Basic (Organic & Inorganic)
  • Biofuels
  • Pharmaceutical
  • Water
  • Waste Water
  • Conventional Steam
  • Geothermal
  • ANSI B16.34
  • EN 12516
Design Range

Size Range:

  • DN 80 to 700
  • NPS 3" to 28"

Pressure Class Range:

  • PN 10 to 40
  • ANSI 150 to 300

Seating Material: Metal, Soft

Features & Benefits
  • Longer service life provided by triple-offset design, which minimizes seat wear during opening and closing
  • Minimized pressure loss and low energy costs due to tight shutoff
  • Low installation costs enabled by compact wafer design and low weight
  • Improved safety assured by Safety Integrity Level (SIL) 3 and IEC 61508 certification
  • Increased uptime — even in difficult media and demanding pressures — through excellent design, materials and performance characteristics


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