SUN HYDRAULICS
DNCATBN248

***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 DNCATBN248 (DNCATBN248) is a solenoid-operated, 4-way, 2-position cartridge valve featuring a direct-acting, balanced spool design. This directional valve is engineered with a closed transition between positions, significantly reducing oil loss during shifting, which is particularly beneficial in pilot control circuits. The valve's capacity is optimized with port 3 as the inlet and port 1 as the tank; while reverse flow is possible, it is not recommended due to potential performance inconsistencies. Constructed for durability, the solenoid tube assembly is fatigue-rated for service up to 5000 psi (350 bar) and operates without requiring a minimum hydraulic pressure. Cartridges configured with EPDM seals are specifically designed for systems utilizing phosphate ester fluids, as they are vulnerable to damage from petroleum-based substances. This valve incorporates a wet armature design where the working fluid surrounds the armature and absorbs heat from the coil\u2014an important consideration if the coil remains energized for extended periods. Fluids such as water-glycol mixtures can degrade at these temperatures over time, potentially affecting cartridge performance. The high-efficiency solenoid design delivers robust spool actuating force per watt expended, ensuring reliable valve shifting. Coils are interchangeable with other Sun Series 1 solenoid products and can be mounted in either direction on the tube. Offering various coil termination and voltage options\u2014with some providing surge protection\u2014the DNCATBN248 can be customized to meet specific application needs. The valve utilizes Sun's floating style construction to minimize internal binding due to excessive installation torque or machining variations in cavity/cartridge interfaces. It features a capacity of 8 gpm (30 L/min), a typical response time of 50 ms, and supports switching frequencies up to 15,000 cycles per hour. The manual override requires minimal force and stroke for operation, enhancing ease of use in various hydraulic systems.