SUN HYDRAULICS
DNDCXTE812N

***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 DNDCXTE812N (DNDCXTE812N) is a direct acting, solenoid-operated, 4-way, 3-position spool valve designed for high-efficiency hydraulic control applications. This valve is spring-centered to the neutral position and offers versatile flow configurations: when coil A is energized, the flow routes from port 3 P to port 2 A and from port 4 B to port 1 T; energizing coil B redirects the flow from port 3 to port 4 and from port 2 to port 1. The valve's solenoid tube assembly is fatigue-rated for service pressures up to 5000 psi (350 bar), ensuring robust performance in demanding environments. Notably, this valve operates without requiring a minimum hydraulic pressure due to its direct actuation design. It accommodates differential flow circuits by directing higher return flows through specific ports. The valve features EPDM seals suitable for systems using phosphate ester fluids but cautions against exposure to petroleum-based substances which can damage these seals. The DNDCXTE812N employs a wet armature design where the working fluid surrounds the armature, potentially impacting function if exposed to heat generated by prolonged coil energization. This could be particularly critical with water-glycol mixtures that may degrade over time at elevated temperatures. A variety of coil termination and voltage options are available, including those with surge protection, enhancing adaptability across different setups. Coils are interchangeable within Sun Series 1 products and can be mounted bidirectionally on the tube. The solenoid's magnetic design ensures high efficiency with substantial spool actuating force per watt expended, promoting reliable valve shifting. The incorporation of Sun's floating style construction minimizes internal part binding risks due to excessive installation torque or machining variations in cavity/cartridge setups. With a capacity of up to 5 gpm (20 L/min), a typical response time of 50 ms, and a switching frequency of up to 15,000 cycles per hour, this valve provides dependable performance for various hydraulic control systems.