SUN HYDRAULICS
DMDADNV228

***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 DMDADNV228 (DMDADNV228) is a high-performance solenoid-operated 3-way, 2-position cartridge valve designed for demanding hydraulic applications. This direct-acting, balanced spool directional valve is engineered for precision and reliability, featuring a fatigue rating of 5000 psi (350 bar) suitable for rigorous service conditions. The DMDADNV228 ensures smooth operation with its closed transition between positions B and R, enhancing performance by providing faster and more consistent response times especially in pilot control setups where capacity is less critical. This valve operates without requiring a minimum hydraulic pressure, making it versatile across various hydraulic systems. It includes options such as manual overrides with the D or L control featuring a detent mechanism designed for temporary actuation, boasting a mechanical life expectancy of about 7,000 cycles. The wet armature design utilized in this model allows the working fluid to surround the armature which helps manage heat during prolonged coil energization but requires careful selection of fluid to avoid breakdown and varnish formation. Configurations with EPDM seals are tailored for use with phosphate ester fluids; however, these seals must be protected from exposure to petroleum-based products to prevent damage. The interchangeability of coils with other Sun Series 1 solenoid products adds flexibility to system design and maintenance, while the floating style construction minimizes internal binding risks caused by excessive installation torque or machining variations. Key specifications include a flow capacity of 12 gpm (45 L/min), maximum operating pressure of 5000 psi (350 bar), typical response time of 50 ms, and low maximum valve leakage at high pressures. This model also supports high switching frequencies up to 15,000 cycles per hour and can be manually overridden with minimal force. With its robust build and versatile features, the Sun Hydraulics DMDADNV228 is an essential component for advanced hydraulic systems requiring reliable directional control under high-pressure conditions.