Category: Hydraulic Valve

Hydraulic Counterbalance Valves

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Hydraulic Counterbalance 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 in line between directional control valve and a vertically mounted hydraulic cylinder actuator. Counterbalance valve act as a hydraulic restrictor to hydraulic cylinder. For example, a counterbalance valve is used …

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Hydraulic Poppet Valves

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Hydraulic Poppet Valves

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 will open if the poppet stem is applied by a small force. The poppet stem is equipped with an O-ring to prevent oil leakage. The number of poppet in a …

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Closed Center Sliding Spool Directional Control Valve

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Closed Center Sliding Spool Directional Control Valve

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 is applied if a single hydraulic source (pump/accumulator) performs multiple operation and the system is not tolerated any pressure loss during stroke shifting. The figure above shows closed-center sliding spool …

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Solenoid Operated Directional Control Valves

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Solenoid Operated Directional Control Valves

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 solenoid which located at both ends of spool is energized. In one side of solenoid is activated, the rod will be pushed against the end of spool. The spool will …

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Hydraulic Flow Divider Valve

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Hydraulic Flow Divider Valve

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 actuator receives the same flow rate. The figure above showed a flow divider valve in the splitting position. The fluid will enter through port 3; the pressure in port 3 …

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