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Model STATS DNV Type -Mechanical Pipe Connectors
STATS DNV Type Approved mechanical pipe connectors provide a cold-work solution, removing the associated risks of welding. Quick and efficient to install, this permanent solution significantly reduces maintenance duration and provides a cost-effective solution for piping repair, tie-in or capping of redundant pipework. Once installed the integrity of the Connector can be verified with a simple pressure test. An integrated seal verification port provides access to the annulus void between the seals allowing a leak-test to be carried out.
A double block and bleed valve can be fitted to the seal verification port to provide a means of periodically monitoring the integrity of the connection, as part of a routine maintenance or inspection programme. Mechanical connectors have been fitted to a variety of piping systems with a 100% leak-free service history.
Connector Configurations
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Flanged outlet for connecting plain-end pipe to a pre-flanged termination
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Coupling for connecting plain-end pipe to plain-end pipe
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End Cap for capping plain-end redundant pipe work
Connectors are suitable for topside, terminal, FPSO or subsea installation and compatible with processed water, air systems and hydrocarbon applications. Available to suit a wide range of pipe materials including carbon steel, SS316, 22Cr duplex and 6Mo (titan study ongoing).
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No hot-work required, significantly reducing associated risk and costs
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Quick to install resulting in timely completion of maintenance activities
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Easily installed and commissioned with only basic pipework preparation
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Significantly reduces maintenance costs and duration by eliminating the need for welding, associated equipment and personnel
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External grip assembly applies even linear and circumferential load around the host pipe, eliminating localised material deformity and localised stress fractures
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External lock and seal assembly eliminates flow restriction or turbulence
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Removable and reusable with no damage to existing pipework
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Simple standard bolted installation, no specialist tools required
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Maintenance free mechanical pipe connection in accordance with API Specification 6H and certified fire-safe to API 6FA
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Seal verification port can be fitted with a DBB valve to comply with specific operator inspection requirements
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Robust construction provides equivalent or greater design criteria than host pipework
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Coating provided to client specification
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Fabricated design provides a lightweight unit for topside applications
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Sizes 1” to 36” as standard, sizes out with this range available on request
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Maximum working pressure: up to ASME 300# (50 bar / 725 psi) as standard, up to ASME 2500# (256 bar / 3713 psi) available on request*
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Temperature range: -170°C to 300°C
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Dual graphite seal arrangement with verification port to enable pre-commission leak-test
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Minimum design life 20 years