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Collet

Collet

FMC offers the KC-4 and KC-5 Collet Connector designed for connection of subsea flowlines, risers, and XT-wing hubs, to the different parts of the subsea production systems. These may be operated horizontally or vertically. The connectors can be fitted with several bore configurations, from the nominal full-bore, to smaller mono-bore and multi-bore versions, including umbilicals. Connectors are made up by either internal hydraulic operation, or by an external Connector activating tool (CAT ), leaving no hydraulic components subsea.

 

KC-4 Collet Connector

The KC-4 is qualified according ISO 13628-4. The connectors features a compact hub design, slim moment balanced fingers and the F/F (flat-to-flat) geometry between actuator ring and fingers, which provides self-locking of connector and enables a high mechanical advantage (preload/make-up load ratio).

The connector is designed to maintain pretension of the hub-faces in all load cases. The need for separate locking device is eliminated. This has a positive impact on the operational procedures. A further advantage is that preload of the connector is factory set and not subjects to service personnel intervention.

 

KC-5 Collet Connector

The KC-5 has an HP/HT design ( High Pressure/High Temperature Design Pressure, 690 bar) and is ISO 13628-4 qualified. They feature an API hub design, slim moment balanced fingers and the F/F (flat-to-flat) geometry between actuator ring and fingers. This provides a self-locking feature of the connector and enables a high mechanical advantage (preload/make-up load ratio).

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Collet Brochure

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