The Oğuz Marine Lock Valve Series includes the OMKV6 6-way lock valve and the OMKV4 4-way lock valve models used in hydraulic steering systems.

The OMKV6 lock valve is designed for dual-station systems. Beyond its primary function, it separates the connection of two pumps located in different places, ensuring one remains stationary while the other is in operation.

The OMKV4 lock valve is designed for single-station systems. The lock valve is installed between the hydraulic cylinder and the hydraulic pump and helps keep the rudder quadrant fixed under all sea conditions.