DynaFly Series - Butterfly Valve with Pneumatic Actuator - 900/922 Series

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

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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