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ABZ Valve Resilient Rubber Seated Butterfly Valve 709/719 Series
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ABZ Valve Resilient Rubber Seated Butterfly Valve 709/719 Series


Forum’s rugged, general purpose ABZ™ 709 (wafer style) and 719 (lug style) resilient-seated butterfly valves offer long service life and maximize open fluid flow in a compact, lightweight design. Suitable for size 1” to 12” piping systems, these rugged valves utilize unique double-V stem self-seals that ensure superior sealing and seal protection under vacuum or pressurized conditions. 

The split body design enables easy in-line maintenance. Choose from a range of trim materials, seats, and configurations to suit your specific application needs. Compliant with industry standards including API (American Petroleum Institute), ASME American Society of Engineers), and ANSI (American National Standards Institute), ABZ resilient seated butterfly valves offer a range of body styles, materials, and sizes to meet application and process needs.


  • Corrosion-resistant top bushing protects stem from side thrust.
  • Two body styles available: wafer style (ABZ 709), and lug style (ABZ 719).
  • Resil-O-Seat snap-in seat secures seat without bonding and eliminates gasketing requirements.
  • Available seat/liners include EPDM, Buna-N, Viton, Teflon/EPDM, Teflon/Buna-N, Teflon/Viton.
  • Self-adjusting V-shaped stem packing seal protects stem area.
  • Split body design streamlines seat and disc-stem replacement.


  • Water and wastewater treatment
  • Chemical processing 
  • Petroleum production and refining
  • HVAC and building services 
  • General industrial service


  • Valve sizes from 1” to 12” (2.5 cm to 30.5 cm).
  • Pressure rated to 150 PSI bi-directional service and 75 psi end-of-line service.
  • Compliant with API 609 Category A, ANSI Class 125/150 flange standards, ASME 16.1/16.5, ASME 16.34, MSS SP-67.
  • Design tested per API 598.


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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