FCT Triple Offset Butterfly Valve

FCT Triple Offset Butterfly Valve

FCT Triple Offset Butterfly Valve – Frictionless Metal-Seated Shut-Off for Critical Applications

FCT triple offset butterfly valves incorporate three precise offsets:

  1. Shaft is offset behind the disc centerline (1st offset)

  2. Shaft is offset from the pipeline centerline (2nd offset)

  3. The sealing surface is conical, creating a cam-action closure (3rd offset)

This geometry eliminates rubbing between the seat and disc during opening/closing, making it ideal for frequent operation, high temperatures, and tight shut-off needs.

These valves are commonly used in oil & gas, power plants, chemical industries, and process systems where zero-leakage, fire-safe design, and low-emission performance are essential.

Technical Specifications

  • Design Standards: API 609, EN 593, ISO 5752

  • Size Range: 3” to 60” (DN80 to DN1500)

  • Pressure Ratings: ANSI 150, 300, 600 / PN 10 to PN 100

  • Body Materials: WCB, WC6, Stainless Steel, Duplex, Inconel

  • Disc Materials: Stainless Steel, Duplex, Inconel, Aluminum Bronze

  • Seat Type: Metal-to-Metal (Stellite®, CrCo, Tungsten Carbide)

  • Leakage Class: API 598 / Zero-Leakage (Class V–VI)

  • Temperature Range: -46°C to +600°C

  • End Connections: Wafer, Lug, Double Flanged, Butt Weld

  • Operation: Gear, Pneumatic, Electric, Hydraulic

  • Fire Safe: API 607 / ISO 10497 certified

  • Emissions: ISO 15848 / Low-emission packing available

Key Features

  • Triple offset geometry eliminates friction and seat wear

  • Metal-to-metal sealing for fire-safe, high-temperature use

  • Zero leakage shut-off even in extreme conditions

  • Long cycle life with low torque and automation-ready

  • Bi-directional sealing and bubble-tight performance

  • Corrosion and erosion resistant materials available

Applications

  • Oil & gas upstream, midstream, and downstream

  • Power generation (conventional, nuclear, combined cycle)

  • Petrochemical and chemical plants

  • High-temperature steam and condensate systems

  • Cryogenic and severe service isolation

  • Emergency shut-down (ESD) and blowdown lines