SUN HYDRAULICS
DNDCXHN836

***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 DNDCXHN836 (Material Number: DNDCXHN836) is a direct acting, solenoid-operated, 4-way, 3-position spool valve designed for precision control in hydraulic systems. It is spring-centered to maintain a neutral position and offers versatile flow configurations when either coil A or 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 redirects flow from port 3 to port 4 and from port 2 to port 1. This valve operates efficiently under high-pressure conditions up to a maximum of 5000 psi (350 bar) without requiring minimum hydraulic pressure for activation. The DNDCXHN836 features a fatigue-rated solenoid tube assembly and incorporates a wet armature design, which enhances its durability by surrounding the armature with working fluid that also dissipates heat generated by the coil. This design consideration is crucial for applications involving extended coil energization periods. The valve's construction includes Sun's floating style mechanism that minimizes potential binding of internal parts due to installation torque or machining variations. This model offers flexibility with various coil termination and voltage options, some of which include surge protection. Coils are interchangeable within the Sun Series 1 solenoid products range and can be mounted in either direction on the tube. The high-efficiency solenoid ensures reliable valve shifting with significant actuating force per watt expended. For systems using phosphate ester fluids, cartridges with EPDM seals are recommended, as exposure to petroleum-based fluids can damage these seals. With a capacity of handling flows up to 5 gpm (20 L/min), this valve exhibits rapid response times typically around 50 ms and supports switching frequencies up to 15,000 cycles per hour. It also includes Viton seal kits for both cartridge and coil components, ensuring robust sealing performance in demanding environments.