Best wishes for a wonderful holiday season!

Our offices will be closed the week of Christmas, from December 23 – 27, 2024 to allow our team to celebrate with loved ones. We will reopen December 30.

Thank you for your understanding.

Automated Butterfly Valves

The DynaFly 90 Wafer and 92 Lug Series are the work horses of industrial butterfly valves. Pre-sized and preassembled with our MA series electric actuators, these valves come standard with ductile iron body and disc and abrasion-resistant Buna-N Phenolic Backed Seat for stretch resistant, tight shut-off during actuation and quick and easy field repairs. Other voltages and body or seat materials are available on request.

Please select Search by Specification to narrow product results for a specific application.

90/92 Series Specifications and Options:

  • Wafer Style (900) or Lug Style (922) Bodies
  • Standard Body Material: ASTM A536 Ductile Iron
  • Standard Disc Material: Ni-Coated Ductile Iron. 316 Stainless Steel is also available
  • Standard Seat Material: Buna-N Also available in EPDM, Viton, PTFE/EPDM
  • 200 PSI CWP 2-12" direct mount
  • Temperature range: -40°F to 392°F (Dependent on seat material)
  • Operator: MA series Electric Actuator (DynaFly Series)

Key Actuator Specifications and Benefits

  • NEMA 4X Weatherproof/Corrosion resistant housing
  • Manual Override, Non-clutch side mounted handwheel
  • Die Cast Aluminum with Epoxy polyurethane paint
  • Two (2) 1/2" NPT conduit entries
  • Self-locking, high allow steel gear train
  • 30% Duty rated reversing motors
  • Thermal overload protection
  • Four (4) Limit switches for Motor Control and Remote Indication of End of Travel
  • Adjustable mechanical travel stops and Local visual position indication
  • 120 V ac, single phase standard. Additional voltages available including: 12 V dc, 24 V dc, 24 V ac, 220 V ac single phase, 230 V ac triple phase, 460 V ac triple phase

Key Valve Specifications and Benefits

  • ISO 5211 mounting patterns and square stems for ease of actuation.
  • Cartridge style elastomer seat provides a positive seal without the use of flanges.
  • 200psi rating for valve size 1.5” to 12”.
  • Secondary O-Ring provides further prevention of stem leakage.
  • Stem retainer plate ensures blowout protection.
  • Precision profile disc provides bubble-tight shut-off and assures minimum torque and longer seat life.
  • Smooth finished disc flats that prevent leakage into shaft areas.
  • Extended neck
  • No taper pins on the disc to ensure trouble-free service and better flow.
  • Graphite-reinforced PTFE stem bushings provide low torque and long cycle life.
  • Lug style valves shall be suitable for dead end service to full rated pressure in in preferred flow direction: 200psi unidirectional; 100psi bi-directional
  • Vacuum service capable 1.5” – 12” to below 10 microns

The DynaFly 90 Wafer and 92 Lug Series are the work horses of industrial butterfly valves. Pre-sized and preassembled with our HP series pneumatic actuators, these valves come standard with ductile iron body and disc and abrasion-resistant Buna-N Seat for stretch resistant, tight shut-off during actuation and quick and easy field repairs. Pilot solenoids, positioners, other pneumatic accessories or other valve body and seat materials are available on request.

See our 900/922 Series for detailed butterfly valve information.
See our HP Series for detailed pneumatic actuator information

Please select Search by Specification to narrow product results for a specific application.

90/92 Series Specifications and Options:

  • Wafer Style (900) or Lug Style (922) Bodies
  • Standard Body Material: ASTM A536 Ductile Iron
  • Standard Disc Material: Ni-Coated Ductile Iron Also Available in 316 Stainless Steel
  • Standard Seat Material: Buna-N Also available in EPDM, Viton, PTFE/EPDM
  • 200 PSI CWP 2-12"
  • Temperature range: -40°F to 392°F (Dependent on seat material)
  • Operator: HP Series Pneumatic Actuator (DynaFly Series)

Key Actuator Specifications and Benefits

  • Operation: Available in Double Acting, Spring Return Fail Close and Spring Return Fail Open
  • Body: Extruded Aluminum Alloy
  • Piston: Aluminum Alloy, ASTM B179
  • End Cap: Aluminum Alloy, ASTM B179, Epoxy Coated
  • Drive Shaft: Forged Steel, ASTM A105 Nickel Plated
  • Seal, O-Rings: Buna N
  • Bearings: Delrin PTEF + 15% graphite for AHP105 - HP140 thrust bearings
  • Fasteners: SS ASTM A193-B8
  • Nuts: SS ASTM A194-GR8
  • Loaded Springs: Steel, Zinc Phosphate Coated
  • Operating Temperature -4° F to 176°

Optional Actuator Accessories such as Pilot Solenoid Valves, Valve Position Limit Switches, Electro-Pneumatic Positioners and others can be found in Pneumatic Actuator Accessories

Key Valve Specifications and Benefits

  • ISO 5211 mounting patterns and square stems for ease of actuation.
  • Cartridge style elastomer seat provides a positive seal without the use of flanges.
  • 200psi rating for valve size 1.5” to 12”.
  • Secondary O-Ring provides further prevention of stem leakage.
  • Stem retainer plate ensures blowout protection.
  • Precision profile disc provides bubble-tight shut-off and assures minimum torque and longer seat life.
  • Smooth finished disc flats that prevent leakage into shaft areas.
  • Extended neck
  • No taper pins on the disc to ensure trouble-free service and better flow.
  • Graphite-reinforced PTFE stem bushings provide low torque and long cycle life.
  • Lug style valves shall be suitable for dead end service to full rated pressure in in preferred flow direction: 200psi unidirectional; 100psi bi-directional
  • Vacuum service capable 1.5” – 12” to below 10 microns