SUN HYDRAULICS
DNDCXYN72499

***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 DNDCXYN72499 (DNDCXYN72499) is a direct-acting, solenoid-operated, 4-way, 3-position spool valve designed for efficient hydraulic control. This valve features a spring-centered neutral position and operates with no minimum hydraulic pressure requirement. When coil A is energized, flow occurs from port 3 P to port 2 A and from port 4 B to port 1 T; energizing coil B redirects flow from port 3 to port 4 and from port 2 to port 1. The solenoid tube assembly is fatigue-rated for service up to 5000 psi (350 bar), ensuring durability under high-pressure conditions. It incorporates a wet armature design, which allows the working fluid to surround the armature and absorb heat generated by the coil. This design consideration is crucial for applications where the coil may be energized for extended periods, as certain fluids can degrade at high temperatures. The valve's unique magnetic design enhances solenoid efficiency, providing high spool actuating force per watt expended, ensuring reliable shifting operations. Its construction minimizes internal part binding due to excessive installation torque or machining variations in cavity/cartridge configurations. The DNDCXYN72499 offers flexibility with various coil termination and voltage options available, including those with surge protection. Coils are interchangeable with other Sun Series 1 solenoid products and can be mounted in either direction on the tube. This valve supports a capacity of up to 5 gpm (20 L/min) and has a response time of approximately 50 ms. It accommodates differential flow circuits by directing higher return flows through specific ports as needed. Additionally, cartridges with EPDM seals are suitable for systems using phosphate ester fluids but should avoid petroleum-based substances to prevent seal damage. The valve's robust design makes it suitable for applications requiring frequent switching cycles of up to 15,000 cycles per hour while maintaining low leakage rates under specified conditions.