Description
The DynaFly 70 Wafer and 72 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.
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70/72 Series Specifications and Options:
- Wafer Style (700) or Lug Style (722) 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: MA series Electric Actuator (DynaFly Series)
Key Actuator Specifications and Benefits
- NEMA 4 Weatherproof/Corrosion resistant housing Manual Override and Non-clutch side mounted hand-wheel
- Die Cast Aluminum with Epoxy polyurethane paint
- Two (2) 1/2″ NPT conduit entries
- Self-locking, high allow steel gear train
- Reversing Motors, Thermal Overload Protection, 30% Duty rated long life
- 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
- 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. Positive dead-end service up to 75PSIG MAX
- 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
