Resilient Rubber Seated Butterfly

Also known as concentric or zero-offset valves, resilient-seated butterfly valves are widely favored for specialty liquid and gas applications. 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.

396/397 2”-72” Rubber Seated Butterfly

Forum’s ABZ™ 396/397 product series features general purpose resilient-seated butterfly valves that are especially suitable for dead-end service. With one-piece bodies in wafer or full-lug styles, they are available in multiple configurations and corrosion-resistant materials that increase working life and simplify field maintenance.

Forum’s ABZ valves meet rigorous industry standards that include the American Petroleum Institute (API), the American Society of Mechanical Engineers (ASME) and the American National Standards Institute (ANSI).

Features
  • General purpose
  • Two- to 72-inch sizes
  • Rated to 200 PSI
  • One-piece body
  • Wafer-style body (396)
  • Full-lug-style body (397)
  • Semi-lug with locating holes not tapped (396)
  • Full-lug drilled (397)
  • Stub shaft design with internal drive so stems can be removed/replaces without special tools
  • Bonded seat design with EPDM* or Buna-N rubbers (other materials on request)
  • Long neck for insulation requirements
  • Disc: 316 stainless steel, aluminum bronze, Nylon 11-coated ductile iron, nickel-plated ductile iron
  • Teflon graphite-impregnated stem brushing
  • Compliance: API (598/609 Category A), ANSI Class 125/150, ASME (16.1/16.5/16.34/MSS SP-67)

*ethylene propylene diene monomer


101/102 2”-12” Rubber Seated Butterfly

Forum’s ABZ™ 101/108/102 series of general purpose, resilient-seated butterfly valves feature rugged bodies that are machined to high tolerances that ensure interchangeability of parts and actuators. Every stage of detailed manufacturing – such as machine- and hand-buffing of individual discs – is designed to ensure tight shutoffs, maximum seat life and valve performance that stands up to harsh working conditions.

Our ABZ valves meet rigorous industry standards that include the American Petroleum Institute (API), the American Society of Mechanical Engineers (ASME) and the American National Standards Institute (ANSI).

Features
  • General purpose
  • Two- to 12-inch sizes
  • Rated to 175 pounds PSI
  • One-piece body
  • Wafer-style body (101)
  • Semi-lug-style body (108)
  • Full-lug-style body (102)
  • Stainless steel cap screw to secure disc to stem
  • Long neck for insulation requirements
  • Special snap-in seat available in EPDM* or Buna-N rubber (other materials on request)
  • Disc: 316 stainless steel, aluminum bronze, ductile iron, epoxy-coated ductile iron
  • Teflon graphite-impregnated stem brushing
  • Compliance: API (598/609 Category A), ANSI Class 125/150, ASME (16.1/16.5/16.34/MSS SP-67)

*ethylene propylene diene monomer

090/929 2”-12” Rubber Seated Butterfly

Forum’s ABZ™ 090/929 series of resilient-seated butterfly valves feature thin-profile discs that encourage excellent fluid characteristics such as maximum open flow. Our advanced design includes a unique disc/stem configuration that prevents high-pressure distortion and a flange sealing method that eliminates gasketing requirements. All of our valve products are meticulously manufactured to lower your operating costs by providing long life and simplified maintenance.

Our ABZ valves meet rigorous industry standards that include the American Petroleum Institute (API), the American Society of Mechanical Engineers (ASME) and the American National Standards Institute (ANSI).

Features
  • Chemical/food
  • Two- to 12-inch sizes
  • Rated to 150 pounds PSI
  • Wafer-style body (090)
  • Full-lug-style body (929)
  • One-piece disc/stem
  • Special snap-in seat available in various materials including Teflon®
  • Disc: standard trim stainless steel, Buna-N-covered or EPDM* rubber (other materials on request)
  • Top bushing to protect stem from side-to-side thrust of operators
  • Teflon graphite-impregnated stem brushing
  • Compliance: API (598/609 Category A), ANSI Class 125/150, ASME (16.1/16.5/16.34/MSS SP-67)

*ethylene propylene diene monomer

909/919 2”-12” Rubber Seated Butterfly

Suitable for chemical, food or sanitary applications, Forum’s ABZ™ 909/919 resilient-seated butterfly valves feature a thin profile that maximizes open fluid flow. As with all of our valves, we manufacture the 909/919 series for optimal sealing that protects every valve component. As an example, our unique double-V stem self-seals to protect the stem area against vacuum or pressure use. In addition, the ring seal is molded as part of the seat to create a positive secondary seal that prevents both leakage into the stem journal and media migration behind the seat.

Our ABZ valves meet rigorous industry standards that include the American Petroleum Institute (API), the American Society of Mechanical Engineers (ASME) and the American National Standards Institute (ANSI).

Features
  • Chemical/food/sanitary
  • Two- to 12-inch sizes
  • Rated to 150 PSI
  • Wafer-style body (909)
  • Full-lug-style body (919)
  • One-piece disc/stem with Teflon®-covered disc
  • Special snap-in seat made of Teflon for applications in chemical and food industries
  • Molded O-ring in Teflon forms a seal against all standard ANSI flanges
  • Top bushing to protect stem from side-to-side thrust of operators
  • Teflon graphite-impregnated stem brushing
  • Compliance: API (598/609 Category A), ANSI Class 125/150, ASME (16.1/16.5/16.34/MSS SP-67)

709/719 1”-12” Rubber Seated Butterfly

Forum’s rugged, general purpose ABZ™ 709/719 resilient-seated butterfly valves are machined to offer long life and resiliency in a slim profile that permits maximum open fluid flow. Offered in sizes under 12 inches, these sturdy little valves meet the strictest industry standards for durability and tight shutoff. The 709/719 valves feature superior sealing features such as unique double-V stem self-seals that protect stem areas during vacuum or pressure use. Available in wafer and full lug body styles, you can select from numerous materials and configurations for specific product needs.

Our ABZ valves meet rigorous industry standards that include the American Petroleum Institute (API), the American Society of Mechanical Engineers (ASME) and the American National Standards Institute (ANSI).

Features
  • General purpose
  • One- to 12-inch sizes
  • Rated to 150 PSI
  • Wafer-style body (709)
  • Full-lug-style body (719)
  • One-piece disc/stem
  • Special snap-in seat available in various materials including Teflon®
  • Disc: standard trim stainless steel, Buna-N covered, or EPDM* rubber (other materials on request)
  • Teflon graphite-impregnated stem brushing
  • Top bushing to protect stem from side-to-side thrust of operators
  • Compliance: API (598/609 Category A), ANSI Class 125/150, ASME (16.1/16.5/16.34/MSS SP-67)

*ethylene propylene diene monomer

201/202 14”-20” Rubber Seated Butterfly

Some of the hardest conditions that valves must face are not catastrophic events, but the unrelenting wear-and-tear of nonstop operation. Forum’s ABZ™ 201/202 resilient-seated butterfly valves are manufactured to be tough, tight and true. From high-tolerance bodies to superior-strength internal valve drives, they feature the most advanced designs and materials available. Far from being just the “tough cookies” of the valve world, they are engineered for precise, exceptional performance.

Our ABZ valves meet rigorous industry standards that include the American Petroleum Institute (API), the American Society of Mechanical Engineers (ASME) and the American National Standards Institute (ANSI).

Features
  • General purpose
  • 14- to 20-inch sizes
  • Rated to 150 pounds PSI
  • Wafer-style body (201)
  • Full-lug-style body (202)
  • One-piece body
  • Stub shaft design with internal drive (remove/replace without special tools)
  • Special snap-in seat available in EPDM* or Buna-N rubbers (other materials on request)
  • Disc: ductile iron, coated ductile iron, 316 stainless steel
  • Teflon® graphite-impregnated stem brushing
  • Top and bottom bushings to protect stem from side-to-side thrust of operators
  • Compliance: API (598/609 Category A), ANSI Class 125/150, ASME (16.1/16.5/16.34/MSS SP-67)

*ethylene propylene diene monomer