Resilient Seated Butterfly Valves


OC/OS Series: A-T Resilient Seated Butterfly Valves

A-T Controls Butterfly Valves cover a wide range of industries from General Purpose to Chemical, Food and Beverage, Pulp and Paper, Waste Water applications and more. The product line features many choices of seat, disc and stem materials which enable you to address a wide variety of applications and media. A-T Controls Butterfly Valves are designed to comply with MSS-SP-67 and API-609 and are tested to comply with API-598 standards. They are compatible with ANSI 125/150 flanges. The A-T butterfly valves have been ABS Approved and hold CRNs (Canadian Registration Numbers). 

  • OS & OSB Series 
    Square stem, Sizes 2-12"
    Body material is Ductile Iron (OSB) or Stainless Steel (OS) 
  • OC & OCB Series 
    DD stem, Sizes 14" and larger
    Body material is Ductile Iron (OCB) or Stainless Steel (OC)

Trim Options

  • Body  Wafer or Lug style, ductile iron or stainless steel
  • Disc  Nickle Plated Ductile Iron, 316 Stainless Steel (polished option), Aluminum Bronze, Nylon Coated Ductile Iron, Undercut 316 SST (polished option), Undercut Aluminum Bronze, and others may be available on request
  • Seat  EPDM, Buna-N, Food grade EPDM, High temp EPDM, Viton®, PTFE 
  • Stem  416 SST standard (316 SST, 431 SST, 17-4PH and others available)
  • Stem Bushing  PTFE (Lubricated Bronze available)
  • Stem Seal  Buna (Viton® available)

AS Series: PFA Lined Split Body Butterfly Valve

AS Series butterfly valves are PFA lined (encapsulated) for superior corrosion resistance against severe chemicals and corrosive services.

  • Bi-directional, bubble tight shut-off
  • Rated to 150 psi
  • Standard 17-4PH® stem
  • Live-loaded packing
  • Blow out proof stem
  • 2-piece wafer of lug bodies are epoxy coated
  • Resilient back up liner
  • Multiple safety seals
  • Operating Temp: 20°F to 335°F
  • Sizes 2-12" (CF for 14-24")

Butterfly Valve Tee Assembly

A-T Controls’ Butterfly Valve Tee Assemblies provide a cost-effective, alternative to a 3-way valve solution. Available for lug style butterfly valves, these unique tee assemblies can be customized to fit your application. Consult factory for valve selction and assembly options.

  • Sizes 2" - 36"
  • Lug style Ductile Iron body
  • Various seat options for special applications