In many cases, shipboard valves that are blocked, passing or cavitating have a high accident, injury and claim potential, they can also be a vehicle for commercial and operational disasters.
Valves, whether pneumatic, hydraulic, or manually controlled, allow to regulate flow and are of crucial importance on board of a ship. Ultrasounds are there to help in detecting failures and problems in a quick and easy way.
Valves can be divided in different categories according to their function, i.e., flow regulating valves (flow, pressure, temperature, level and either automatically or manually operated), isolation valves (used to cut off the flow and usually manually operated, generally vertically or rotary closing), safety valves (ensuring pressure or vacuum control in a system. Fast and automatic operations to open and release pressure or flow is necessary.) and check valves (controlling the direction flow in a pipe avoiding back flow).