The WELLCON™ line of drilling choke product ranges consists of two main choke types: TYPE NC-921, which features a gate & seat orifice, and the TYPE NS-922, which features a rotating disc orifice.
These Chokes have been especially effective when operated under well kicks, well testing and well cleanup operations. With several options and configurations, ideal for onshore or offshore, Neeco Industries can manufacture for diverse applications on a global scale.

Type: NC-921
  • Size

    Flange Sizes: 2-1/16” to 4-1/16” bore in a 90° body orientation

    Orifice Sizes: Available in 1.75” (44.5 mm) and 2” (50.8 mm) diameters

  • Size

    Flange Sizes: 2-1/16” to 4-1/16” bore in a 90° body orientation

    Orifice Sizes: Available in 1.75” (44.5 mm) and 2” (50.8 mm) diameters

  • Pressure Rating

    • 5,000 PSI (345 bar)
    • 10,000 PSI (689 bar)
    • 15,000 PSI (1,034 bar)
  • Temperature Rating

    P-X (-20°F to 350°F)

  • Trim

    EE-NL

  • Product Specification Level

    PSL-1 to PSL-3G

  • Design

    • Solid tungsten carbide gate and seat, reversible for two complete seal and wear areas
    • Digital Position Indicator is available optionally
    • Piston hydraulic actuator (500-1500 psi)
    • Can be converted to a manual operation valve
  • Certifications

    • NACE MR0175, API 6A 20th Edition & API 16C 2nd Edition Monogrammed
    • PED 97/23/EC Module H, CE Marking
Type: NS-922
  • Size

    Flange Sizes: 2-1/16” to 4-1/16” bore in a 90° body orientation

    Orifice Sizes: Adjustable orifice size of 1.92 in 2 to total closure

  • Size

    Flange Sizes: 2-1/16” to 4-1/16” bore in a 90° body orientation

    Orifice Sizes: Available in 1.75” (44.5 mm) and 2” (50.8 mm) diameters

  • Pressure Rating

    • 5,000 PSI (345 bar)
    • 10,000 PSI (689 bar)
    • 15,000 PSI (1,034 bar)
  • Temperature Rating

    P-X (-20°F to 350°F)

  • Trim

    EE-NL

  • Product Specification Level

    PSL-1 to PSL-3G

  • Design

    • Heavy-duty, diamond lapped tungsten carbide discs
    • Positive closure, a 17° dead band overlap beyond full closure
    • Seal improves under pressure
    • Radial hydraulic rotation of actuator (1500 psi) fork
    • Features emergency back-up manual operation w/ bar
  • Certifications

    • NACE MR0175, API 6A 20th Edition & API 16C 2nd Edition Monogrammed
    • PED 97/23/EC Module H, CE Marking