High Performance Triple Offset Butterfly Valves


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High Performance Triple Offset Butterfly Valves – VF8 Series


High Performance Triple Offset Butterfly Valves

  • Size: 3”~108”(80 mm ~2700mm)
  • Temperature Range: -320F-1022F (-196C- 550C)
  • Pressure Rating: ANSI 150/300/600/900 ANSI

High Performance Triple Offset Butterfly Valves Features

  • One piece Removable/Repairable Shaft/Disc with Internal Spline Drive for ease of maintenance
  • Triple-Offset butterfly valve is available with Graphite Laminated Seat or Solid Metal Seat.
  • Stellite 21 harden disc edge overlay increases hardness of sealing surface and provides long service life.
  • “Seat -in-Body” design provides significant increase in service life compared to seat on disc edge
  • ISO-5211 Mounting for easy automation utilizing any ISO-5211 actuator

High Performance Triple Offset Butterfly Valves Specifications

  • Body Style: Wafer type, Lug type, Double Flange Type
  • Body Shell Thickness: ASME B16.34
  • Mounting: ISO 5211
  • Design & Pressure: ASME B16.34
  • Face to Face: API 609, ISO 5752
  • Inspection and Testing: ISO 5208, API 598
  • Fire Safe: API 607, ISO 10497
  • VOC: ANSI/ISA-SP-93, TA-Luft, ISO15848-1/-2
  • Cryogenic: BS 6364
  • Standard Marketing System: MSS-SP-25
  • EX Certificate: ATEX
  • Safety Integrity Level 3 (SIL3): IEC-61508-1
  • Leakage Class: ANSI FCI 70-2-2006 TABLE 1, ISO 5208 RATE D/A
  • Flange Connection:
    • ASME B16.5 Class 150/300/600/900LB
    • ASME B16.47 Class 150/300/600/900LB

(Other flange connection please contact BVC)

*Technical information is only for reference. Subject to change without previous notice.


Suitable for high temperature, high pressure, fire, corrosion and other harsh conditions of use and applied to use in petroleum, natural gas, chemical, refining, energy and power, ultra-low temperature for the process off site and the role of regulating valve.