Autonomous subsea motorised valve

LF Technologies’ XAV motorised valves are equipped with a rotary electric actuator specially developed for subsea applications. The opening angle can be precisely controlled for regulation functions.
These valves are used in particular for filling, emptying and adjusting ballast in subsea vehicles.

Features of the XAV motorised valve :

• Integrated control: on-board electronics for precise control of position and speed directly in the actuator.
• Absolute position measurement: integrated absolute position measurement: no need to search for zero.
• Multiple communication protocols: compatible with several protocols such as CAN, RS232, Ethernet TCP, Ethernet UDP, Modbus TCP, with customisation on request.
• Connection of external sensors : as an option, additional connectors can be integrated to connect external sensors (pressure, flow, etc.) to create control loops.

Validation and testing of XAV underwater motorised valves:

All submarine modules developed by LF Technologies are fully tested in-house, eliminating the need for additional testing:

• Full functional tests: tests carried out in air and in immersion under real load;
• Rigorous tightness tests: validation of tightness up to maximum permissible pressure.
• Verification of communication protocols : checks that the system is operating correctly according to the protocol chosen by the customer (CAN, RS232, Ethernet TCP, Ethernet UDP, Modbus TCP, protocols on request).
• Full energy analysis: measurement of current and power consumption according to several usage scenarios.
• Regulation tests.

Features on request:

• Valve type (2-way or 3-way, on/off or proportional)
• Supply voltage
• Communication protocol
• Control loop on external sensors
• Connectors
• Fasteners