The figure above illustrated the working principle of direct acting relief valve. When the hydraulic force Fh equals spring force Fs, the valve cracks open,…
Category: Hydraulic Valves
A counterbalance valve opens a free flow in one direction while regulating the opposite flow until a certain pressure is reached. Counterbalance valve typically installed…
A poppet valve consists of movable poppet which closes against a valve seat. The inlet pressure will hold the valve on closed position. The poppet…
In an open-center sliding spool directional control valve, the spool is designed to pass all flows on all its passages when the valve is centered.…
In a closed-center sliding spool directional control valve, all the flow passages are blocked when the piston is centered in its body. The closed-center valve…
Manually operated directional control valve is used to control the flow direction by manual hand force. The spool can be shifted by applying force at…
Hydraulic pilot operated four-way valve is used to control the hydraulic fluid flow direction by using a pilot pressure. In the figure above, if the…
Solenoid operated directional control valves are used to control the hydraulic fluid flow direction electrically. A spool fitted inside valve body will shift if the…
Hydraulic flow divider valve is used to synchronize two actuating unit. A flow divider divides a single flow stream into two equal streams so each…
Orifice Check Valve is used on a fluid system which needs normal operation speed on one direction and reduced speed in other direction. The figure…