Pressure reducing valves are used when a part of a hydraulic system needs to operate at a lower pressure than the rest of the system, and when combined with a solenoid, the function can be electrically controlled. They are used to maintain a stable and controlled pressure in a specific part of the system, independent of pressure fluctuations in other parts of the system.
3 ports, reducing/relieving main stage with integral T-8A pilot control improved dynamic response
4 ports, reducing/relieving main stage with integral T-8A pilot control externally drained
4 ports, reducing/relieving main stage with integral T-8A pilot control externally drained improved dynamic response
4 ports, reducing/relieving direct acting low leakage externally drained
4 ports, reducing/relieving direct acting improved dynamic response externally drained
Electro-proportional, direct-acting, pressure reducing/relieving valve with open transition (740 Series)
Electro-proportional, direct-acting, pressure reducing/relieving valve (740 Series)
2 ports, pilot operated, balanced piston
3 ports, electro-proportioneal direct acting, low leakage 3-way. Please note, the valves are no longer available. Replacement is PRDG. For more information, please contact one our sales engineers.
3 ports, electro-proportional direct acting, low leakage, inverse function 3-way
3 ports, electro-proportioneal direct acting, improved dynamic response 3-way. Please note, the valve is no longer available. Replacement is PRDF. For more information, please contact one our sales engineers.
3 ports, electro-proportioneal direct acting, improved dynamic response inverse function 3-way
3 ports, reducing/relieving main stage with integral T-8A pilot control 3-way
3 ports, reducing/relieving main stage with integral T-8A pilot control 3-way driller pilot orifice direct in mail spool
To enable electric control, the sequence valve is combined with a solenoid coil. Solenoid coils from Sun Hydraulics are available in various models with different connector types and voltage options, providing high flexibility for adaptation to different applications. The solenoids are compatible with both on/off functions and proportional control. For proportional control, the XMD controller is recommended, which can be easily configured via a mobile app or computer software.
Direct-acting pressure reducing valves regulate pressure levels more quickly and have lower internal leakage compared to pilot-operated valves. They are therefore particularly well suited for accumulator circuits, where the requirement for minimal leakage is especially critical.
Reducing/relieving valves are often used since they combine both pressure reducing and pressure relieving in a single valve. These valves not only reduce pressure to a desired level but can also manage pressure spikes from the downstream side by acting as a relief valve with flow back to the tank. Reducing/relieving valves are frequently used in hydraulic systems where continuous pressure regulation is required in a specific part of the system, while also handling occasional pressure surges.
A pressure reducing valve has limited capacity for reverse flow, which is why it is recommended to combine it with a check valve. Please feel free to contact one of our sales engineers – we’ll be happy to help you find the right valves for your specific hydraulic system.
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