SUN HYDRAULICS
DNCALLN224

***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 DNCALLN224 (DNCALLN224) is a solenoid-operated, 4-way, 2-position cartridge valve designed for direct-acting, balanced spool directional control. This valve features a closed transition between positions, minimizing oil loss during shifting, which is especially beneficial in pilot control circuits. It operates with port 3 as the inlet and port 1 as the tank, though reverse flow is not recommended due to potential performance issues. The solenoid tube assembly is rated for fatigue at 5000 psi (350 bar), ensuring robust service life. This direct-actuated valve requires no minimum hydraulic pressure for operation and utilizes EPDM seals suitable for phosphate ester fluid systems while avoiding petroleum-based fluids. The DNCALLN224 employs a wet armature design where the working fluid surrounds the armature, impacting its function if exposed to prolonged coil heat\u2014fluids like water-glycol mixtures may degrade over time due to this heat exposure. The solenoid's magnetic design provides high efficiency with substantial spool actuating force per watt used, contributing to reliable valve shifting. Interchangeable coils can be mounted in either direction on the tube and offer various termination and voltage options, including surge protection. Coil connector options are available with ratings up to IP69K for enhanced environmental protection. This model incorporates Sun Hydraulics' floating style construction to reduce internal part binding from excessive torque or cavity-cartridge machining variations. It fits into T31A cavities and belongs to Series 1 with an 8 gpm (30 L/min) capacity and a maximum operating pressure of 5000 psi (350 bar). The typical response time is around 50 ms, with a maximum leakage rate of 10 in\u00b3/min at 3000 psi (160 cc/min at 210 bar). The valve supports up to 15,000 switching cycles per hour and features manual override capabilities with specific force requirements and stroke dimensions.