Argus® FK79 Severe Service Floating Ball Valve (Side & Top Entry)

The Argus® FK79 floating ball valve combines robust construction with adaptable stem, seat and coating options for demanding process conditions. FK79 provides tight shutoff for oil and gas, petrochemical, chemical service such as nuclear and MoD applications. Designed to API 6D, ASME B16.34 or BS 5351 requirements, it supports tight shutoff, durable service and fugitive emissions control.

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  • Modular construction with HVOF and Spray & Fuse coatings and cladding supports severe environments
  • Zero-tightness capability is enabled by a Class VI seat design
  • Upgradable stem and seat arrangements suit changing process needs
  • Fugitive emissions design to ISO 15848 contributes to plant safety

  • ASME B16.34
  • API 6D
  • PED 97/23/EC
  • Fire-safe: API 607/ ISO 10497-5
  • Oxygen Service: ASTM G124, BAM, EIGA
  • FE (Fugitive emission): ISO 15848, TA LUFT VDI/VDE 2440
  • ISO 9001
  • Anti-static: DIN EN ISO 17292
  • Shell : SPP 77/300 - CG Spec (Slag sluice systems)
  • Brazil: NBR 15847
  • Cryogenic: BS 6364, SPE 77/306

Size Range:

  • DN 15 to 50mm (DIN)
  • DN 1/2 to 2 (ASME)

Pressure Class Range:

  • PN 16 to 250 (DIN)
  • Class 150 to 2500 (ASME)

Temperatures:

  • -105°C to 650°C
  • -157°F to 1202°F

Seating Material: Metal or soft seated

Extreme High Cycle
Stem supported in bearings ensures seals are free from operation loads. Special bearing configurations including cladding of critical areas and trim coating configurations improve valve life-time.

Extreme High Temperature
Designed for temperatures up to +1022°F for the highest demands on valve tightness in process and to atmosphere (FE).

Solid Transport
Chambered ball seats, seat pocket body design, stem seal protection and flushing system designs support valve performance and extend service life-time.

Severe Service
Process optimized coatings, cladding option and wearing protectection feature extends ball valve life-time.

Flushing Systems
Flushing options in critical valve areas (e.g. on seats, stem or cavity) avoid media build up to improve service life-time.

Oxygen Service
High performance designs for high pressure, metal to metal seat gas tightness solutions in Oxygen service. In house Clean-room assembly and testing.

Special Alloys
Process and application related special alloys (e.g. Inconel, Monel, Alloy20, Titanium).

Special applications
Product Discharge valves, valve internal cladding for critical areas in abrasive and erosive environment, and ESD (Emerging Shut Down valves) units.

Documents & Support

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