Oleostar Hydraulics

Oleostar pressure control valves protect hydraulic systems, regulate pressure in specific circuit branches and manage pressure‑driven sequences.

Typical products include the following:

• Pressure relief valves
• Differential area relief valves
• Pilot‑operated relief valves
• Electric venting relief valves
• Anti‑shock valves
• Direct‑acting proportional relief valves
• Pressure-reducing valves
• Pilot‑operated proportional reducing valves
• Hydraulic sequence valves
• Balanced sequence valves
• Unloader valves
• Two‑pump hi‑low unloading valves
• Two‑way valves with external pilot
• External pilot and drain sequence valves
• Kick‑down sequence valves

These valves are used for system protection, controlled pressure reduction and pressure‑triggered sequencing.

Oleostar check valves allow free flow in one direction and block flow in the opposite direction. Pilot‑operated versions provide secure load holding and drift prevention.

Typical products include:

• Ball check valves
• Poppet check valves
• Shuttle valves
• Double‑acting check valves
• Single‑acting pilot‑operated check valves
• Double‑acting pilot‑operated check valves
• High back‑pressure valves
• Shut‑off valves

These valves support load holding, hose‑failure protection and prevention of actuator drift.

Oleostar flow control valves regulate flow rate, provide adjustable restriction and maintain stable flow under varying loads.

Typical products include:

• Hydraulic needle valves
• Fine‑adjust needle valves
• Needle valves with reverse free‑flow check
• Pressure‑compensated 2‑way flow regulators
• Pressure‑compensated 3‑way flow regulators
• Flow dividers and combiners
• 2‑way valves with reverse free‑flow check
• 2‑way proportional flow valves
• 3‑way proportional flow valves

These valves are used for speed control, flow regulation and circuit balancing.

Oleostar counterbalance valves, also known as overcentre valves, control load motion and provide safe, smooth lowering.

Typical products include:

• Single‑acting counterbalance valves
• Double‑acting counterbalance valves
• Closed‑centre counterbalance valves
• Motion‑control lock valves

These valves prevent load drop, reduce drift and ensure controlled movement in lowering or runaway conditions.

Oleostar solenoid valves provide electrically operated on‑off control for load holding, blocking and directional flow management.

Typical products include:

• 2‑way pilot‑operated valves
• 3‑way 2‑position valves
• 4‑way 2‑position valves
• 4‑way 3‑position valves

These valves are used in mobile machinery and compact hydraulic systems requiring reliable electrical actuation.

Oleostar automatic reversing valves switch oil flow direction based on mechanical actuation or pressure increase.

Typical features include:

• Automatic flow reversal
• Reliable switching
• Compact installation

These valves are used in systems requiring automatic cycling or directional change without manual intervention.

Oleostar produces pressure control valves, check valves, flow control valves, counterbalance valves, directional solenoid valves and automatic reversing valves.

Oleostar became part of Walvoil in 2005. The product range continues to be widely used in mobile and industrial hydraulic systems.

Oleostar supplies ball and poppet check valves, shuttle valves, double‑acting check valves and pilot‑operated check valves.

Yes. The range includes needle valves, pressure‑compensated flow regulators, flow dividers and proportional flow control valves.

Counterbalance valves provide controlled load lowering, drift prevention and smooth motion control.

Automatic reversing valves switch oil flow direction based on mechanical actuation or pressure increase.

Yes. We can identify any Oleostar component from a part number, label, photograph or application details.

Yes. Hydraulics Online supplies Oleostar hydraulics worldwide with full export documentation and technical support.

We can cross‑reference discontinued Oleostar components to current Walvoil equivalents or suitable alternatives.