SUN HYDRAULICS
DNDATRV812

***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 DNDATRV812 (DNDATRV812) is a solenoid-operated 4-way, 2-position cartridge valve designed for direct-acting, balanced spool directional control. This valve is engineered to operate without the need for minimum hydraulic pressure, making it versatile for various applications. It is fatigue rated for 5000 psi (350 bar) service, ensuring durability under high-pressure conditions. The cartridge features multiple manual override options, although manual override functionality is not compatible with weatherized coils. For models with D or L control, the detent mechanism in the manual override supports temporary actuation with a mechanical life expectancy of approximately 7,000 cycles. This valve incorporates a wet armature design where the working fluid surrounds the armature and dissipates heat generated by the coil. Users should be cautious of fluid breakdown in long-term energized states, particularly with water-glycol mixtures that can form varnishes affecting valve function. The solenoid's magnetic design provides high efficiency and reliable valve shifting by maximizing spool actuating force per Watt expended. The DNDATRV812 offers various coil termination and voltage options, including surge protection capabilities. Coils are interchangeable with other Sun Series 1 products and can be mounted bidirectionally on the tube. Connector options provide ratings up to IP69K for enhanced environmental protection. The valve features Sun's floating style construction to minimize internal binding due to installation torque or machining variations. With a capacity of 10 gpm (40 L/min) and a maximum operating pressure of 5000 psi (350 bar), this cartridge demonstrates robust performance metrics such as a typical response time of 50 ms and a maximum leakage rate of 10 in\u00b3/min at 3000 psi (160 cc/min at 210 bar). It supports switching frequencies up to 15000 cycles/hr and requires specific force for manual override operations. The model weighs .60 lb (.30 kg) and includes Viton seal kits for both cartridge and coil components.