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ABZ Valve Resilient Rubber Seated Butterfly Valve 396/397 Series
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ABZ Valve Resilient Rubber Seated Butterfly Valve 396/397 Series


Forum’s ABZTM 396/397 butterfly valve series offers durable, general-purpose valves ideal for dead-end service applications. Available in wafer or full-lug styles from 2 to 72 inches, these corrosion-resistant valves feature one-piece bodies that simplify maintenance and increase working life. Forum designs the 396/397 series to meet rigorous industry standards from API, ASME, and ANSI.   

Forum’s ABZ butterfly valves provide reliable performance across a range of temperatures and pressures. Their resilient seats and variety of available disc materials suit them for use with a wide range of media. Compact and lightweight, these space-saving valves install easily into pipelines and control the flow of liquids, gasses, slurries, and powders.  


  • General purpose butterfly valves from 2 to 72 inches.  
  • Pressure ratings vary by size: 2 inches to 12 inches rated up to 200 PSI bi-directional and dead end service; 14 inch to 24 inch rated 150 PSI bi-directional and dead end service; 26 inches and larger rated at 150 PSI bi-directional and 75 PSI dead end service.
  • One-piece wafer (396) or full-lug (397) style body.   
  • Semi-lug (396) or full-lug (397) end connections.
  • Stub shaft and internal drive for easy stem removal.  
  • Bonded EPDM, Buna-N, or Viton seat for tight shut-off.
  • Variety of disc materials for different applications.  
  • Long neck for insulation.  
  • Complies with API 598/609, ANSI 125/150, and ASME 16.1/16.5 and 16.34, and MSS SP67 standards.


  • Ideal for dead-end service and frequent operation.   
  • Used in oil and gas, chemical, petrochemical, mining, general industry and municipal plants.
  • Suitable for liquids, gasses, slurries and powders.  
  • Installed in pipelines, tanks, heat exchangers and other equipment.  


  • Rated from full vacuum up to 200 PSI bi-directional pressure in smaller sizes; 150 PSI in larger sizes.
  • Operates across a wide range of temperatures.  
  • Provides tight shut-off and long service life.
  • Simplifies installation, operation, and maintenance.  
  • Offers high flow capacity for size.


Forum’s comprehensive ABZ product line includes general purpose and specialty valves up to 72 inches. All of our resilient-seated valves feature tight-tolerance bodies, resilient seals, simplified field maintenance and durable impact/corrosion-resistant materials for maximum life.


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