Sun’s standard Solenoid Operated Ventable Relief valves help to save energy and reduce heat in hydraulic systems. These pre-configured valve assemblies offer a convenient means to provide system relief protection combined with the ability to unload a pump with a simple ON/OFF electrical signal.

In Normally Open configurations, the valve package maintains low pressure until the solenoid is actuated, after which the relief valve will pass oil to tank when the relief setting is reached.

In Normally Closed configurations, the relief valve functions in the typical manner as long as the solenoid valve is de-energized. Once energized, pump flow is ported to tank at low pressure.

Sun’s Solenoid Operated Ventable Relief valve assemblies are offered with multiple options. 

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