Butterfly Valve 24 to 144 inch with Bolted Seal (Series BFII)

The VSI Waterworks’ BFII Butterfly Valve is a workhorse for flow control and isolation service in-line sizes from 24” through 144”.

The resilient seat is held on the body by corrosion resistant retainers, allowing easy adjustment at every seat interface.  The seat is field replaceable on all valves, and in-line replaceable on larger sizes with proper safety precautions.  Flow through discs assure minimal pressure drop.  A standard ISO 5211 or MSS SP-101 actuator attachment bonnet make automation a painless experience.

Valves in this line are designed and constructed to meet and exceed AWWA C504.



  • Size Range: 24″-144″ (600-3650mm)
  • Temperature Range: to 325F
  • Pressure Ratings: 150psi, 250psi CWP
  • Velocity Ratings: 16 ft/sec per AWWA C504 Class 150B or 250B
  • Body Material: Ductile iron, cast iron, carbon steel
  • Disc Material: Ductile iron, cast iron, carbon steel, stainless steel
  • Connection: Flanged or mechanical joint
  • Operator: Hand wheel, chain wheel, nut, pneumatic, hydraulic, electric
  • Available Options: Special materials, AWWA long body lay length, custom bolt patterns, higher velocity
    *Many other options are available upon request.


All SizesTorque and Cv SpecsTorque and Cv Specs
24"-144"Product BrochureBFII 504-106
24"-144"Valve Specifications504-103-DA
24"-42"AWWA C504 Proof of Design CertificationC504-06-42
48"-72"AWWA C504 Proof of Design CertificationC504-06-72
24"-144"AWWA C504 Proof of Design CertificationAdditional Individual Size Certifications Available Upon Request
24” - 120”Installation, Operation, and Maintenance ManualAWWA C504
Replaceable Seat Butterfly Valves
24"-144"1 Year WarrantyWarranty 1 Year From Acceptance

1205 Alpha Drive
Alpharetta, GA 30004

(770) 740-0800
(866) 987-1999


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