Line Stop Fittings


Uni-Forge line stop fittings are the ideal solution when operations call for the stoppage of pipeline medium during temporary line operations.

Our fittings are engineered and extruded with outlets from 2” to 48”, and equipped with a welding neck flange RF according to ANSI Class 150, 300, 600 or 900. Larger sizes and pressure ratings are available.

Fittings are also:

  • stamped with a code number for material identification and traceability
  • provided with material certificates
  • manufactured and delivered in line with your quality control specifications.

If required, we can also perform:

  • Radiography testing
  • Ultrasonic testing
  • Magnetic particle examination
  • Hydrostatic testing
  • Destructive and non-destructive testing.

Technical Specifications

Size Range 2” to 48” – larger sizes available
Pressure Rating 150# – 900#
Wall Thickness 0.5” to 2”
Material Carbon steel, Alloy steel and Stainless steel
Codes ASME B31.1, B31.3, B31.4, B31.8 and DOT compliant
Flange Type Uni-Lock flanges with Completion Plugs, with or without scaffed nipple facilities.


Please click here to view our Design Validation Certificate

Please click here to view our Design Manufacturing Validation for Extruded Hot Tap & Line Stop Tees

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