SUN HYDRAULICS
DNCALBN297

***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 DNCALBN297 (DNCALBN297) is a high-performance, solenoid-operated 4-way, 2-position cartridge valve designed for reliable hydraulic direction control in various applications. This direct-acting, balanced spool valve features a closed transition between positions, significantly minimizing oil loss during shifting which is crucial in maintaining efficiency in pilot control circuits. The design allows for port 3 to be used as the inlet and port 1 as the tank outlet, although it supports reverse flow with noted limitations on performance. Engineered for durability, the DNCALBN297's solenoid tube assembly is fatigue rated for up to 5000 psi (350 bar), ensuring robust performance under high pressure conditions. The valve does not require a minimum hydraulic pressure to operate, making it versatile across different hydraulic systems. It incorporates EPDM seals specifically for use with phosphate ester fluids; however, these seals are susceptible to damage if exposed to petroleum-based fluids. This model employs a wet armature design where the working fluid surrounds the armature. This setup needs consideration due to potential heat buildup when the coil is energized extensively. Special attention should be given when using water-glycol mixtures as they can degrade under high temperatures. The DNCALBN297 offers various coil termination and voltage options, including configurations with surge protection. Its magnetic design enhances solenoid efficiency, providing strong actuating force per watt of power consumed which aids in consistent valve shifting. Additionally, coils are interchangeable with other Sun Series 1 solenoid products and can be mounted in either orientation on the tube. This valve model also benefits from Sun's floating style construction which helps prevent internal parts binding due to installation torque or cavity/cartridge machining variations. With options like weatherized coils and kits for environmental protection and multiple connector options rated up to IP69K, this valve adapts well to diverse operational environments while maintaining its functional integrity and reliability.