SUN HYDRAULICS
DMDADBN228

***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 DMDADBN228 (DMDADBN228) is a high-performance solenoid-operated 3-way, 2-position cartridge valve featuring a direct-acting, balanced spool design. This model is particularly noted for its robust construction with a solenoid tube assembly that is fatigue rated for up to 5000 psi (350 bar), making it suitable for high-pressure applications. The valve operates with no minimum hydraulic pressure required, enhancing its versatility in various system configurations. The DMDADBN228 uses spools B and R which are closed during the transition between positions, optimizing performance by providing faster and more consistent response times, especially useful in pilot control applications where capacity is less critical. This valve features a wet armature design wherein the working fluid surrounds the armature; this setup requires consideration of fluid characteristics as prolonged exposure to heat could affect fluid integrity. Compatibility with other Sun Series 1 solenoid products is facilitated by interchangeable coils that can be mounted in either direction on the tube. The design also incorporates Sun\u2019s floating style construction which minimizes internal parts binding due to installation torque or machining variations of cavity/cartridge. The manual override option available on models with D or L control uses a detent mechanism designed for temporary actuation, with a mechanical life expectancy of about 7,000 cycles. For environments using phosphate ester fluids, cartridges equipped with EPDM seals are recommended to prevent damage from petroleum-based substances. Technical specifications include a maximum operating pressure of 5000 psi (350 bar), flow capacity up to 12 gpm (45 L/min), and typical response times around 50 ms. The valve also supports switching frequencies up to 15000 cycles per hour and has manual override requirements detailed for operational ease. This model\u2019s construction and capabilities make it suitable for demanding applications requiring precise control and reliability.