SMC FAQ - Why does the 5-port solenoid valve operate poorly at low pressure (0.1MPa)?

Create Date: 2024-8-30 12:03:23|Source: SMC

The internal pilot operated solenoid valve uses the pilot pressure to switch the spool and change (control) the flow path. If the pilot pressure does not reach the minimum operating pressure of the switching spool (0.1-0.2MPa: varies depending on the model), the switching will be defective. If you want to use a 5-way solenoid valve at low pressure, you can switch to an externally pilot-operated or direct-operated solenoid valve.

[ Internal Pilot Operated Solenoid Valve ]

The small pilot valve (direct-acting 3-way valve) is switched by the electromagnetic force of the solenoid coil, and the supply pressure of the valve is transmitted to the main valve (spool valve), and the main valve is switched with this pressure.
SMC FAQ - Why does the 5-port solenoid valve operate poorly at low pressure (0.1MPa)?

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