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Threaded Connections

ECHO-F4™ FGL

Integral, Flush Joint, Semi Premium, Injection String, Special Clearance, Coatable

ECHO‑F4 FGL is a flush joint connection designed for Fiber Glass Liner (FGL) systems. It incorporates a swaged and bored pin and a flush OD profile, along with a precision‑machined groove to secure liner rings and flanges, delivering reliable lining operations.

Tech DataDocumentationContact Sales

Performance & Sizes

SIZE RANGE2.875” - 4.500”
TENSION51%-55%

Testing Performed

  • Make & Break
  • Field Proven

Key Features

  • Outside diameter flush with pipe body, eliminating external interference.
  • Flush inside diameter enables smooth lining operations.
  • Optimized groove and latching assembly secures the liner without sacrificing tension or internal pressure performance.
  • Integral connection design reduces leak paths versus API and eliminates coupling‑based running issues.
  • Proprietary interference threadform provides robust make‑up and gas‑tight sealing.
  • Metal‑to‑metal internal seal ensures a reliable pressure barrier.