Audco Butterfly Valve
Flowserve Audco Butterfly Valves: Selection & Operational Summary
Flowserve Audco Butterfly Valves are industry-standard, quarter-turn process valves engineered for tight shutoff and precise throttling across heavy-duty utility and industrial piping applications. Their integrally molded elastomer body liner prevents liner movement or stretching, offering zero-leakage performance with minimal maintenance.
Core Specifications & Material Configurations
- Size Range: DN50 2" to DN600 (24") standard; customizable up to 48".
- Pressure Ratings: Available in PN10, PN16, and PN20 (ANSI 150) classes.
- Body Materials: Cast Iron (GG25/GGG40), Ductile Iron, Cast/Fabricated Carbon Steel, and Stainless Steel.
- Disc Materials: Cast Iron, Stainless Steel (CF8/CF8M), SG Iron (frequently Nylon-coated/encapsulated), or Aluminium Bronze.
- Body Liners/Seats: Nitrile (oils/gases), EPDM (water/HVAC), Viton, and Neoprene.
Audco Product Series Overview
|
Series |
Body/Seat Design |
Primary Applications |
Key Advantage |
|
Slimseal® |
Compact wafer or lug style with vulcanized liner |
HVAC loops, water distribution, compressed air |
Liner isolates body from media, drastically lowering friction and seal wear. |
|
Aquaseal® |
Heavy-duty elastomer-lined variant |
Raw water, water treatment plants, cooling loops |
Erosion-resistant seating with high throttling accuracy and low operating torque. |
|
Chemseal & Cleanseal |
Specialty elastomer/lined variants |
Corrosive chemicals, sanitary food & beverage lines |
Prevents contamination while resisting aggressive chemical attack. |
|
Triple Offset |
Bidirectional metal-to-metal seating |
Extreme temperature and high-pressure steam/process lines |
Bubble-tight seal without elastomeric parts susceptible to thermal degradation. |
Actuation & Operation Options
- Flow Control Hand Lever: DN50 to DN150 (up to DN300 on lighter pressure classes) for rapid manual operation.
- Standard Gear Unit: DN50 to DN350 featuring smooth handwheel mechanical advantage.
- Heavy Duty Gear Unit: DN200 to DN600 for elevated torque demands or direct motor interface.
- Automated Actuators: Scalable to all valve sizes; factory-fitted with Pneumatic (double-acting or spring-return), Hydraulic, or Electric Actuators.
Primary Engineering Advantages
- Zero Leakage: Molded-in-body seats eliminate seat displacement or blowouts under high velocity.
- Low Torque Requirement: Smooth internal contours reduce disc friction, permitting smaller, cost-effective actuators.
- Compact Footprint: Wafer profile significantly cuts down overall pipeline weight and envelope dimensions compared to gate or globe valves.
