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