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Threaded Connections
ECHO-F4™
Integral, Flush Joint, Semi Premium, Injection String, Special Clearance
The ECHO‑F4 is a flush joint connection engineered for slim‑hole applications and remedial operations where casing integrity has been compromised. Its swaged and bored pin and flush outside‑diameter profile make it easy to install while maintaining internal clearance. A precision‑machined groove and Teflon sealing ring provide low‑pressure sealability, making the ECHO‑F4 an economical and reliable solution for liners and casing repair jobs.
Performance & Sizes
| Size range | 2.375″ – 5.500″ |
Testing Performed
- Make & Break
- Field Proven
Key Features
- Outside diameter flush with pipe body, minimizing external protrusions.
- Integral connection design reduces leak paths versus API and eliminates coupling‑based running issues.
- Proprietary interference threadform for robust make‑up strength and torque resistance.
- Metal‑to‑metal internal seal provides gas‑tight sealing reliability.
- Recessed Teflon seal ring protects internal plastic coating during installation.