Streamseal® Butterfly Valve

Allis-Chalmers Butterfly Valve

​​Sizes: 24 - 166" 

Aftermarket Service and parts are available for the Allis-Chalmers or Streamseal® Butterfly Valve. We have been providing maintenance and refurbishment services 1990.

For valve replacement valve, we would like to offer the EKN® Double Eccentric Butterfly Valve. However, we can still supply the Streamseal design if desired. 


  • Body, Cover: Cast Iron, ASTM A126 Class B
  • Disc: Ductile Iron, ASTM A536, Grade 65-45-12
  • Shaft: Stainless Steel
  • Shaft Seal: Bronze with Teflon Packing
  • O-Ring: Buna-N​

Streamseal® Allis Chalmers Butterfly Valve

​​Product Features and Benefits:

  • Rugged and corrosion resistant
  • Domed disc design for low headloss
  • Resilient to stainless steel lock-in seating
  • Two-way, field adjustable thrust bearing
  • AWWA C504 and C516 compliant
  • Flow-through and low-profile disc designs available
  • Full rubber coating available for corrosive applications
  • Available in sizes 24”-168”
  • Manual, electric, or hydraulic actuation