Collection:Hydraulic Valves

Hydraulic valves control where the oil goes, at what pressure and how fast, and so decide how cylinders and hydraulic motors move. They fall into three functional groups: directional control valves, pressure control valves and flow control valves. Most hydraulic circuits use at least one valve from each group.

Directional control valves start, stop and reverse the flow. Solenoid valves switch electrically, from simple 2/2-way valves that open or close one line to valves that move a cylinder in both directions. Hand lever valves do the same by hand. Ball valves shut off a line manually, and check valves let oil pass in one direction only or hold a load in position.

Pressure control valves protect and divide the system. Relief valves limit the maximum pressure and protect the pump and components; reducing valves hold part of the circuit at a lower, constant pressure. Flow control valves, such as throttle, throttle check and needle valves, set the speed of an actuator.

Valves are installed in two main ways. Inline valves have threaded ports and sit directly in the pipe line, which suits single functions. NG6 (D03) valves share a standard mounting interface and are stacked on sub-plates, which builds a compact control with many functions and little piping. Choose the function first, then the installation style, and then size the valve on flow, pressure and connection.