SUN HYDRAULICS
DNCALWN812N

***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 DNCALWN812N (DNCALWN812N) is a solenoid-operated, 4-way, 2-position cartridge valve featuring a direct-acting, balanced spool directional design. This valve is engineered with a closed transition between positions, which significantly reduces oil loss during shifting\u2014a critical feature for pilot control circuits. It operates with port 3 as the inlet and port 1 as the tank, although reverse flow is not recommended due to potential performance issues. The solenoid tube assembly is designed to withstand fatigue at pressures up to 5000 psi (350 bar), ensuring durability and reliability in high-pressure applications. This direct-actuated valve requires no minimum hydraulic pressure for operation and is compatible with EPDM seals for use in systems utilizing phosphate ester fluids. The DNCALWN812N employs a wet armature design, which allows the working fluid to surround the armature and absorb heat generated by the coil. Users should note that certain fluids, like water-glycol mixtures, may degrade over time under these conditions. The valve offers various coil termination and voltage options, some with surge protection capabilities. Its high-efficiency solenoid design provides substantial spool actuating force per watt expended, enhancing reliable valve shifting. Coils are interchangeable within the Sun Series 1 solenoid products and can be mounted in either direction on the tube. For environmental protection, coil connector options are available with ratings up to IP69K, along with additional weatherized coils and kits. The valve incorporates Sun's floating style construction to minimize binding risks due to installation torque or cavity machining variations. With a capacity of 8 gpm (30 L/min) and a typical response time of 50 ms, this model also features a switching frequency of up to 15,000 cycles per hour. The DNCALWN812N is lightweight at just .60 lb (0.30 kg) and comes with Viton seal kits for both cartridge and coil configurations.