What Magnet Performance And Grades Are Used for Solenoid Valves?

Solenoid valve magnet performance directly determines valve switching accuracy, working stability and service life. Neodymium magnets for solenoid valves require core advantages of high coercivity, stable magnetic flux and outstanding anti-demagnetization, resisting reverse magnetic interference from frequent coil energization.

For low-temperature indoor solenoid valves below 80°C, N35, N42 and N45 are the most widely used grades. These standard neodymium magnets deliver steady magnetic force and cost-effective performance for common pneumatic and hydraulic solenoid valves.

For industrial solenoid valves with continuous heat up to 120°C, N42H and N45H high coercivity magnets are the ideal choice. Their upgraded temperature resistance effectively prevents magnetic fading during long-term cyclic operation. For harsh automotive and high-temperature industrial scenarios reaching 150°C, N42SH and N45SH anti-demagnetization magnets dominate the industry.

 We offer custom sizes, shapes and magnetization solutions to fit miniature and heavy-duty solenoid valve applications for diverse industrial equipment.