Flowserve Audco Lubricated Taper Plug Valve

Products Flowserve Audco Lubricated Taper Plug Valve

Audco Lubricated Taper Plug Valves are the global industry standard for high-reliability flow control in demanding, high-pressure, and dirty fluid environments. Manufactured by Flowserve Serck Audco, these quarter-turn valves utilize a metal-to-metal seating design paired with a heavy-duty sealant mechanism. They provide bubble-tight shutoff where soft-seated valves (like standard ball or butterfly variants) would rapidly fail.

Key Engineering Features

  • Super LoMu Treatment: Plugs from 1½ inches and above undergo a unique surface treatment where low-friction PTFE is integrated into the metal structure. This prevents taper locking and ensures low, consistent operating torque over years of service.
  • Seating Protection: When the plug is in the fully open position, the precision-lapped seating surfaces are completely shielded from the line media. This confines erosion and corrosion to non-critical areas.
  • In-Line Sealant Ingestion: The valve features an internal network of lubricant grooves. Specialized sealant can be injected into the system while the valve is under full line pressure and in any position, facilitating effortless in-line maintenance.
  • Straight-Through Flow Path: The body cavity geometry ensures minimal resistance to fluid motion, reducing pressure drops and turbulences.

Technical Specifications Matrix

Feature Cast Iron (CI) Configuration Carbon Steel / Alloy Steel Configuration
Size Spectrum (NB) 15 mm to 400 mm (½" to 16") 15 mm to 300 mm (½" to 12")
Pressure Ratings ASME Class 125, Class 150 ASME Class 150, 300, 600 up to 2500
Body Layout Options Regular Pattern, Short Pattern Short Pattern, Regular, Steam Jacketed
End Connections Flanged (ASME B16.5 / Table D) Screwed (NPT/BSPT), Flanged, Butt-Weld
Standard Sealant Audco Sealant No. 733 Audco Sealant No. 733 (Custom grades available)

Core Product Portfolio Variations

  • Standard Type Plug Valves: Features the operational stem shank at the larger end of the tapered plug layout, perfect for conventional fluid isolating layouts.
  • Super-H Pressure Balanced Valves: Engineered explicitly for high-pressure severe duties. It utilizes internal balancing ports to equilibrate upstream pressure forces, entirely preventing the plug from locking or jamming in the body.
  • Multiport Valves (3-Way & 4-Way): Used for flow diversion, blending, or split-isolation circuits. These variants drastically reduce the total number of fittings and valves required in industrial piping designs.

Are you aiming to procure replacement valves for an existing pipeline or drafting technical line specifications for a new project? If you can share your line medium (slurry, gas, steam) and operating temperature, I can recommend the exact Audco Sealant compound code required for your system.