SUN HYDRAULICS
DMDAMRN628

***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 DMDAMRN628 (DMDAMRN628) is a solenoid-operated 3-way, 2-position cartridge valve that excels in direct-acting, balanced spool directional control. This valve is specifically designed to handle a maximum operating pressure of 5000 psi (350 bar), making it suitable for high-pressure applications. With a capacity of 12 gpm (45 L/min), it can efficiently manage fluid flow within hydraulic systems. The rapid response time of approximately 50 ms ensures swift and reliable operation. A notable feature of the DMDAMRN628 is its closed transition between Spools B and R, which enhances performance by providing faster and more consistent response times, particularly beneficial in pilot control applications where capacity is less critical. The valve's manual override options include D, L, and T controls with a mechanical life expectancy of around 7,000 cycles, designed primarily for temporary actuation. This model employs EPDM seals suited for systems using phosphate ester fluids; however, these seals must avoid exposure to petroleum-based fluids to prevent damage. Additionally, the wet armature design indicates that the working fluid surrounds the armature which could be susceptible to heat during prolonged coil energization, potentially affecting fluid integrity over time. The interchangeability of coils with other Sun Series 1 solenoid products adds versatility to this unit, allowing for easy replacements or upgrades. Furthermore, its construction incorporates Sun\u2019s floating style design which minimizes internal parts binding\u2014a common issue caused by excessive installation torque or cavity/cartridge machining variations. Overall, the Sun Hydraulics DMDAMRN628 valve offers robust performance with flexible control options and high durability for demanding hydraulic applications.