SUN HYDRAULICS
DNDCXYN812

***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 DNDCXYN812 (DNDCXYN812) is a direct acting, solenoid-operated, 4-way, 3-position spool valve designed for high efficiency and reliability in hydraulic systems. This valve is spring-centered to the neutral position and offers specific flow paths when either coil A or coil B is energized. With coil A activated, the flow moves from port 3 P to port 2 A and from port 4 B to port 1 T. Conversely, energizing coil B directs the flow from port 3 to port 4 and from port 2 to port 1. The solenoid tube assembly is fatigue-rated for service up to 5000 psi (350 bar), ensuring durability under demanding conditions. This valve features a wet armature design where the working fluid surrounds the armature, which can be a consideration for heat management during prolonged coil activation. Notably, fluids like water-glycol mixtures may degrade over time at elevated temperatures. The DNDCXYN812 accommodates various coil termination and voltage options, including configurations with surge protection. Its magnetic design provides high spool actuating force per watt, contributing to dependable valve shifting. The valve's construction incorporates Sun's floating style design to reduce potential internal binding due to installation torque or machining variations in cavity/cartridge setups. It has a capacity of up to 5 gpm (20 L/min) and supports maximum operating pressures of up to 5000 psi (350 bar). The typical response time is approximately 50 milliseconds, with a switching frequency of up to 15,000 cycles per hour. For optimal performance in differential flow circuits, it is recommended that higher return flows be directed through port 2 A to port 1 T. Additionally, cartridges with EPDM seals should be used exclusively with phosphate ester fluids as exposure to petroleum-based substances can cause seal damage. The DNDCXYN812 ensures versatility and adaptability across various hydraulic applications with its robust design and interchangeable components within Sun Series 1 solenoid products.