SUN HYDRAULICS
DNCALLV948

***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 DNCALLV948 (DNCALLV948) is a solenoid-operated, 4-way, 2-position cartridge valve that functions as a direct-acting, balanced spool directional valve. This valve features a closed transition between positions, significantly minimizing 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; however, while reverse flow is possible, it is not recommended due to performance limitations. The solenoid tube assembly is rated for fatigue at 5000 psi (350 bar), and the valve requires no minimum hydraulic pressure for operation. It incorporates EPDM seals suitable for systems using phosphate ester fluids but incompatible with petroleum-based fluids. The DNCALLV948 employs a wet armature design where working fluid surrounds the armature, potentially affecting performance if the coil remains energized for extended periods. This design consideration is crucial when using fluids like water-glycol mixtures that degrade at high temperatures over time. The solenoid's magnetic design enhances efficiency by providing high 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. Additional features include various coil termination and voltage options with or without surge protection and weatherized coils for enhanced environmental protection. The valve incorporates Sun's floating style construction to prevent internal part binding due to excessive installation torque or machining variations in cavity/cartridge applications. Its specifications include an 8 gpm (30 L/min) capacity, maximum operating pressure of 5000 psi (350 bar), typical response time of 50 ms, maximum leakage of 10 in\u00b3/min at 3000 psi (160 cc/min at 210 bar), and a switching frequency of up to 15,000 cycles/hr.