MISALIGNMENT FLANGE ELIMINATING THE TIE-IN BENDING MOMENT
SeAlign combines misalignment capability with robustness and a sealing system that is unaffected by external loads.
The SeAlign flange is supplied as diver flanges with swivelling clamp rings and stud bolts.
SeAlign ROV operated connectors with 3-segmented, single drive screw clamps and complete vertical or horizontal tie-in systems is also available.
With the SeAlign misalignment flanges the tie-in bending moment is eliminated. Significant savings can be materialised from reduced vessel time, shorter spools and ease of installation.
UP TO 3° DEGREES PERMANENT MISALIGNMENT
The SeAlign connection system is designed to provide a leak-tight connection while accommodating a given hub misalignment (+/- 3 degrees up to 20”, +/- 2 degrees for larger sizes) in all directions before make-up. This reduces bending moment loads to a minimum and simplifies tie-in.
The connector has been designed with ISO 13628-7 as the primary design code for strength and leakage criteria, with additional methodology from API 6A and API 17D. The connector is classified as API 6A Other End Connector (OEC), with fabrication and quality requirements per PSL 3. The connector meets requirements of DNV-ST-F101.
TECHNICAL DATA
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The current size range covers 6″ to 36″, with custom sizes available on request.
The main features include:
- Up to +/- 3˚ hub misalignment
- Acts as ball joint – locked at make-up
- Eliminates tie-in bending moment, only axial load required
- Mechanical end stop in hub profile
- Leak tight at all misalignment angles, M2M
- Design pressure and depth rating to suit most applications
The benefits of SeAlign may be realized by one or more of the below:
- Reduced spool size
- Relaxed fabrication tolerances
- Reduced operational loads
Divers making up an 18” SeAlign
Components
Female Hub
Clamp retainer ring
Male Hub
Clamp Ring
Metal Seal
Metal Seal
Stud Bolt
Nut
