SUN HYDRAULICS
DNDCXBN248

***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 DNDCXBN248 (DNDCXBN248) is a direct acting, solenoid-operated, 4-way, 3-position spool valve designed for precision control in hydraulic systems. This valve is engineered to be spring-centered to the neutral position, allowing for versatile flow control depending on which coil is energized. When coil A is activated, fluid flows from port 3 P to port 2 A and from port 4 B to port 1 T. In contrast, energizing coil B redirects the flow from port 3 to port 4 and from port 2 to port 1. The solenoid tube assembly of this valve is robustly constructed with a fatigue rating for service pressures up to 5000 psi (350 bar), ensuring reliability under high-pressure conditions. Notably, this direct actuated valve does not require a minimum hydraulic pressure for operation, making it suitable for various applications where differential flow circuits are present. It features EPDM seals specifically designed for use with phosphate ester fluids while avoiding petroleum-based fluids that could damage the seals. The DNDCXBN248 utilizes a wet armature design that immerses the armature in working fluid, which aids in managing heat generated by the coil during prolonged energization periods. This design consideration is particularly important when using fluids like water-glycol mixtures that may degrade at elevated temperatures. This model offers multiple coil termination and voltage configurations with surge protection options available. The high-efficiency solenoid design provides significant spool actuating force per watt expended, promoting reliable valve shifting even in demanding conditions. Coils are interchangeable within Sun's Series 1 solenoid products and can be mounted bidirectionally on the tube. Additional features include a cavity size of T-31A, a series designation of 1, a capacity of up to 5 gpm (20 L/min), and an impressive switching frequency of up to 15,000 cycles per hour. The valve's construction minimizes internal binding risks due to excessive installation torque or machining variations.