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Flowserve-Durco-Double Offset Butterfly Valves - Big Max BX2001

High Performance Butterfly Valves - Big Max BX2001

BRAND: Durco

The Big Max BX2001 is a high-performance, all-purpose valve designed for precise throttling control or on-off service with lighter weight piping systems and less expensive, energy-efficient actuators.


  • Chemicals
  • Water
  • Oil & Gas

industry sectors

  • Basic (Organic & Inorganic)
  • Specialty (Fine & Consumer)
  • Desalination
  • Downstream Processing
  • ASME B16.43
  • ASME B16.5
  • ASME B16.10
  • API 609
  • ISO 5752
  • MSS SP 68
  • API 598
  • MSS SP61
  • ISO 15848-1
Design Range

Size Range:

  • DN 50 to 900
  • NPS 2" - 36"

Pressure Class Range:

  • PN 10 to 40
  • Class 150 & 300

Seating Material: Soft and Metal

Features & Benefits
  • Broad application versatility via numerous design options: wafer and lug bodies; standard PFA, optional UHMWPE, fire-sealed, Apex® and TriFlex™ seated versions; and multiple packing options
  • Reduced fugitive emissions through triple-leak protection of primary stem seal plus two optional secondary seals
  • Increased capacity and improved flow control with low-profile, double-offset disc
  • Improved personnel and plant safety per adherence to API 609 criteria for safe, reliable anti-blowout protection


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