Flowserve Audco Slimseal Butterfly Valve

Products Flowserve Audco Slimseal Butterfly Valve

Audco Slimseal Butterfly Valves are universally recognized as the industrial benchmark for high-performance, maintenance-free, quarter-turn flow control. Engineered by Flowserve Serck Audco, they feature a distinctive integrally molded (vulcanized in-situ) elastomer body liner. This design completely outlasts standard loose or replaceable liner configurations by eliminating stretching, tearing, and bunching under high velocity.

Core Technical Profile

  • "Fit and Forget" Philosophy: The vulcanized body liner tightly encapsulates the internal cavity, making the valve completely maintenance-free over its entire operating lifespan.
  • Advanced Shaft Sealing: The primary seal is formed by matching flats on the liner at the top and bottom junctions where the shaft passes through. Secondary O-rings provide comprehensive atmospheric protection.
  • Low Operating Torque: The integral lining layout avoids bunching or stretching against the disc, providing a smooth, repeatable torque profile that lowers the cost of manual handles or pneumatic actuators.
  • Bubble-Tight Isolation: Offers absolute bidirectional bi-seating performance under zero leakage requirements.

Technical Specifications Matrix

Feature Low Pressure (HVAC/Water) Heavy Industrial / Process
Model / Series Slimseal PN10 Slimseal PN16 / PN20
Size Spectrum (NB) 50 mm to 300 mm (2" to 12") 50 mm to 600 mm+ (Up to 24")
Body Rating PN 10 (10 Bar) PN 16 / PN 20 (16 to 20 Bar)
Standard Body Material Cast Iron (CI) to BS EN 1561 S.G. Iron / Carbon Steel / WCB
Standard Disc Options S.G. Iron (Nylon / Epoxy Coated) Stainless Steel (CF8 / CF8M)
Liner Materials Black Nitrile / EPDM Viton / White Nitrile / Silicon

Specialized Product Variations

  • Audco Chemseal: Specifically designed for corrosive applications, featuring a highly resilient liner and alloy discs tailored for aggressive chemical lines.
  • Audco Cleanseal: Built explicitly for hygienic, food-grade, and pharmaceutical processes. It incorporates a crevice-free, polished stainless steel disc configuration that prevents line media from becoming stagnant or trapped inside the valve cavity.
  • Actuation Configurations: Readily available in manual lever styles (50 NB to 150 NB) or gear-operated handwheel configurations (200 NB to 600 NB), as well as direct-mount ISO 5211 pad options for pneumatic and electric actuators.

Are you checking these specs for an upcoming procurement project? If you let me know the fluid medium (e.g., chilled water, compressed air, chemicals) and your preferred end connection (Wafer or Lugged), I can pull up the exact manufacturer part numbers or coordinate an estimation quote with verified distributors.