SUN HYDRAULICS
DMDALNN528

***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 DMDALNN528 (DMDALNN528) is a solenoid-operated 3-way, 2-position cartridge valve that exemplifies high performance in hydraulic systems. This direct-acting, balanced spool directional valve is designed to operate without a minimum hydraulic pressure requirement, enhancing its versatility and ease of use across various applications. The model features a wet armature design where the working fluid surrounds the armature, which is crucial for understanding its operational environment and limitations, particularly with long-term coil energization. The DMDALNN528 incorporates advanced design elements such as closed transitions between Spools B and R, optimizing performance by providing faster and more consistent response times at the expense of lower flow capacity. This characteristic makes it ideal for pilot control applications where capacity is less critical. Additionally, the valve's manual override options (D or L control) are equipped with a detent mechanism intended for temporary actuation only. For systems utilizing phosphate ester fluids, cartridges configured with EPDM seals are recommended to prevent damage from petroleum-based fluids. The model also supports interchangeability of coils with other Sun Series 1 solenoid products and includes a floating style construction to minimize internal part binding due to installation torque or machining variations. Key specifications include a maximum operating pressure of 5000 psi (350 bar), flow capacity up to 12 gpm (45 L/min), and rapid response times typically around 50 ms. The valve's robust construction ensures a mechanical life expectancy of approximately 7,000 cycles for manual control assemblies, making it reliable for demanding operational conditions. With an installation torque requirement between 30-35 lbf ft (41-47 Nm) and a modest weight of about .60 lb (0.30 kg), this model combines efficiency with practicality in hydraulic system implementations.