SUN HYDRAULICS
DNDCXBV828

***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 DNDCXBV828 (DNDCXBV828) is a direct-acting, solenoid-operated, 4-way, 3-position spool valve designed for precision control in hydraulic systems. This valve is spring-centered to the neutral position and offers versatile flow configurations when either coil A or coil B is energized. Specifically, energizing coil A directs flow from port 3 P to port 2 A and from port 4 B to port 1 T, while energizing coil B directs flow from port 3 to port 4 and from port 2 to port 1. It features a fatigue-rated solenoid tube assembly capable of handling pressures up to 5000 psi (350 bar), ensuring durability under demanding conditions. The DNDCXBV828 requires no minimum hydraulic pressure for operation, making it suitable for various applications where differential flow circuits are present. For optimal performance in such circuits, the higher return flow should be routed through port 2 A to port 1 T. The valve's construction includes EPDM seals compatible with phosphate ester fluids but not with petroleum-based substances. A standout feature of this valve is its wet armature design, where the working fluid surrounds the armature and absorbs heat generated by the coil. This design consideration is crucial for preventing fluid degradation over extended periods of coil energization. The solenoid's magnetic design enhances efficiency by providing high spool actuating force per watt consumed. Flexibility in system integration is achieved through multiple coil termination and voltage options, including configurations with surge protection and ratings up to IP69K for robust environmental resistance. The interchangeable coils can be mounted in either direction on the tube, adding further adaptability. Additionally, Sun's floating style construction minimizes internal binding risks due to installation torque variations or machining discrepancies. This model supports a maximum flow capacity of 5 gpm (20 L/min) and exhibits a typical response time of approximately 50 ms with minimal leakage at specified viscosities. The DNDCXBV828's capabilities make it an ideal choice for applications requiring reliable valve shifting and high-frequency switching up to 15,000 cycles per hour.