SUN HYDRAULICS
DNDCXHV223

***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 DNDCXHV223 (DNDCXHV223) is a direct acting, solenoid-operated, 4-way, 3-position spool valve designed for precision hydraulic control applications. This valve is spring-centered to maintain a neutral position when not energized. Upon energizing coil A, hydraulic fluid flows from port 3 P to port 2 A and from port 4 B to port 1 T. Conversely, energizing coil B redirects flow from port 3 to port 4 and from port 2 to port 1. It features a robust solenoid tube assembly rated for fatigue at pressures up to 5000 psi (350 bar), ensuring durability in high-pressure environments. The DNDCXHV223 requires no minimum hydraulic pressure for operation due to its direct actuated design. In differential flow circuits, it is recommended that the higher return flow be directed through port 2 A to port 1 T. The valve incorporates EPDM seals suitable for systems using phosphate ester fluids but should be kept away from petroleum-based fluids as they can cause seal damage. This model employs a wet armature design where the working fluid surrounds the armature and absorbs heat generated by the coil\u2014an important consideration for systems where coils remain energized over extended periods. The high-efficiency solenoid design offers significant spool actuating force per watt, ensuring reliable valve shifting even in demanding conditions. The DNDCXHV223 supports various coil termination and voltage options, including those with surge protection. Coils are interchangeable with other Sun Series 1 solenoid products and can be installed in either orientation on the tube. Coil connector options provide ratings up to IP69K for enhanced environmental protection. Additional features include Sun's floating style construction that minimizes internal part binding due to installation torque or machining variations. This valve has a capacity of handling flows up to 5 gpm (20 L/min) with a typical response time of approximately 50 ms and can operate at switching frequencies up to 15,000 cycles per hour.