SUN HYDRAULICS
DNDCXHV614

***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 DNDCXHV614 (Material Number: DNDCXHV614) is a direct acting, solenoid-operated, 4-way, 3-position spool valve designed for precision fluid control. This valve is spring-centered to the neutral position and operates efficiently with no minimum hydraulic pressure required. When coil A is energized, the flow channels 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 solenoid tube assembly is robustly fatigue-rated for service pressures up to 5000 psi (350 bar), making it suitable for high-pressure applications. It features a wet armature design that allows the working fluid to surround the armature, which can be beneficial or detrimental depending on the fluid's thermal stability. The valve's design includes interchangeable coils compatible with other Sun Series 1 solenoid products, offering flexibility in installation and maintenance. Coil connector options provide protection ratings up to IP69K, ensuring reliable operation even in harsh environments. The unique magnetic design of the solenoid ensures high efficiency by delivering substantial spool actuating force per watt expended. In differential flow circuits, it is recommended that higher return flows are directed through port 2 A to port 1 T for optimal performance. Additionally, cartridges with EPDM seals are specifically designed for systems using phosphate ester fluids but should avoid exposure to petroleum-based substances. The valve also incorporates Sun's floating style construction technique to minimize internal part binding due to installation torque or machining variations. With a capacity of up to 5 gpm (20 L/min) and a typical response time of around 50 ms, this valve is engineered for high-frequency switching applications up to 15,000 cycles per hour. For maintenance or replacement purposes, Viton seal kits are available under part numbers: Cartridge - Viton: 990431006; Coil - Viton: 990770006.