Description
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 Phenolic Backed 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: 316 Stainless Steel
- Standard Seat Material: Buna-N Also Available: EPDM, TFE, Viton®
- 200 PSI CWP 2-12″ direct mount, 175 PSI CWP 14-24″ bracket mount
- Temperature range: -40 deg F to 350 deg 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 500
- Fasteners: SS ASTM A193-B8
- Nuts: SS ASTM A194-GR8
- Loaded Springs: Steel, Zinc Phosphate Coated
- Operating Temperature -40° F to 176°F;
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
- Support Shaft Seal: A bonding of elastomer to phenolic backing ring protects against distortion, a common cause of shaft leakage
- Wide flange-face sealing area provides a tight flange-to-valve seal and negates the need for flange gaskets
- Once-piece 416 Stainless Steel stem shaft ensured dependability and positive disc positioning
- Locating holes at bottom and top of Wafer Valve Ease Installation. Lug style valve has drilled and tapped lugs meeting ANSI 125/150 flange standards
- Precision Profile Disc provides bubble-tight shut-off and assures minimum torque and longer seat life
- Set Screw stabilizes the seat to prevent movement. Suitable for dead-end service to full rated pressure in preferred flow direction
- Precision Taper Pin Ensures a positive vibration proof shaft to disc connection
- Once-piece 416 Stainless Steel stem shaft ensured dependability and positive disc positioning
- Four Bushings furnish shaft support for positive shaft alignment and actuator support
