SUN HYDRAULICS
DNDCXRV928

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Sun Hydraulics directly.***
The Sun Hydraulics DNDCXRV928 (DNDCXRV928) is a direct-acting, solenoid-operated, 4-way, 3-position spool valve designed for high-efficiency fluid control applications. This spring-centered valve defaults to a neutral position and features dual coil operation. When coil A is energized, fluid flows from port 3 P to port 2 A and from port 4 B to port 1 T. Conversely, energizing coil B directs flow from port 3 to port 4 and from port 2 to port 1. The valve is fatigue-rated for service pressures up to 5000 psi (350 bar) and operates without the need for a minimum hydraulic pressure. It is ideal for differential flow circuits where higher return flow should be managed through specific ports. The DNDCXRV928 incorporates a wet armature design that allows working fluid exposure to heat generated by the coil, which may affect certain fluids like water-glycol mixtures over time. This design also features a unique magnetic configuration that enhances solenoid efficiency by maximizing spool actuation force per watt consumed, ensuring reliable performance even in demanding conditions. The valve's interchangeable coils are compatible with other Sun Series 1 products and can be mounted in either direction, offering flexibility in installation. With options for various coil terminations and voltage configurations, including IP69K-rated connectors for enhanced environmental protection, this valve can be tailored to specific application requirements. Its floating style construction minimizes internal binding risks due to installation torque or machining variations. The DNDCXRV928 offers a capacity of up to 5 gpm (20 L/min) with typical response times of around 50 milliseconds and supports high switching frequencies up to 15,000 cycles per hour. For systems using phosphate ester fluids, EPDM seal cartridges are available; however, these should not be exposed to petroleum-based substances as they may cause damage.