SUN HYDRAULICS
DNDCXHV514

***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 DNDCXHV514 (DNDCXHV514) is a direct acting, solenoid-operated, 4-way, 3-position spool valve designed for efficient and reliable hydraulic control. This valve features a spring-centered mechanism that defaults to a neutral position. When coil A is activated, the flow channels from port 3 P to port 2 A and from port 4 B to port 1 T. Conversely, energizing coil B redirects the flow from port 3 to port 4 and from port 2 to port 1. The solenoid tube assembly is engineered for high durability, with a fatigue rating suitable for up to 5000 psi (350 bar) service conditions. This valve does not require any minimum hydraulic pressure for operation due to its direct actuation design. It is particularly effective in differential flow circuits where higher return flows should be managed through specific ports for optimal performance. The DNDCXHV514 accommodates EPDM seals, making it compatible with systems utilizing phosphate ester fluids; however, care must be taken as exposure to petroleum-based substances can degrade these seals. The valve incorporates a wet armature design where the working fluid surrounds the armature, exposing it to heat generated by the coil\u2014a consideration when using fluids like water-glycol mixtures that may degrade over time at elevated temperatures. The solenoid's magnetic configuration ensures high efficiency with substantial spool actuating force per watt consumed. Additional features include interchangeable coils with Sun Series 1 solenoid products and various coil termination and voltage options available, including those with surge protection capabilities. The product supports environmental resilience with coil connector options rated up to IP69K and additional weatherized kits available. Installation considerations include a floating style construction that mitigates internal binding risks due to installation torque or machining variations within the cavity/cartridge setup. The DNDCXHV514 is designed for use in T31A cavities and offers a capacity of up to 5 gpm (20 L/min), ensuring robust performance across numerous applications requiring precise flow control and switching frequency capabilities up to 15,000 cycles per hour.