What is Load Sensing Valve (LSV)

A Load Sensing Valve (LSV) is a type of hydraulic valve commonly used in mobile hydraulic systems to control the flow of fluid in response to changes in the load on the system. It is designed to maintain a constant pressure drop across the hydraulic pump, which helps to reduce energy consumption and improve the overall efficiency of the system.

The basic principle of operation of a load sensing valve is that it senses the pressure downstream of the valve, which is directly proportional to the load on the system. The valve then adjusts the pressure at the inlet of the hydraulic pump, which controls the pump output flow rate in response to changes in the load.

There are two main types of load sensing valves: open center and closed center. In an open center system, the valve allows fluid to flow freely through the valve when there is no demand for flow, whereas in a closed center system, the valve blocks the flow of fluid until there is a demand for flow.

Load sensing valves are commonly used in various types of mobile equipment, such as excavators, loaders, and cranes, as they provide efficient control of hydraulic systems and help to reduce energy consumption, leading to improved productivity and lower operating costs.