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Double Offset Butterfly Valve


ABZ Valve Series 400 — Double Offset Butterfly Valve

The high-performance Series 400 (wafer-style) and Series 45 (lug-style) butterfly valves from ABZ feature a top flange and a double eccentric disc. The disc produces a cam-like action, pulling the disc from the seat. This action reduces seat wear and eliminates seat deformation when the disc is in the open position. The disc does not contact the seat when the valve is in the open condition; therefore, seat service life is extended and torques are reduced. As the valve closes, the cam-like action converts the rotary motion of the disc to a linear type motion effectively pushing the disc onto the seat. 

  • Features
  • Body style: wafer and lug
  • Double eccentric disc with bi-directional sealing
  • Standard 316 stainless steel disc
  • Blow-out proof stem
  • Adjustable stem packing
  • Options available for Teflon, metal and fire-safe seats
  • Engineered for special high-performance applications:  NACE service, steam, vacuum, oxygen
  •  Specifications
  • Size: 2"–24"
  • Class: 150, 300, 600
  • API 598
  • API 607
  • API 609 B
  • MSS-SP-68
  • EN 593
  • EN 12266-1
  • EN 12266-2
  • BS EN 12516-1
  • ISO 10497
  • ASME B16.34
  • AISI
  • FCI 70-2

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