SUN HYDRAULICS
DMDAMAN728

***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 DMDAMAN728 (DMDAMAN728) is a high-performance solenoid-operated 3-way, 2-position cartridge valve designed for robust hydraulic system applications. This direct-acting, balanced spool directional valve ensures precise control with its closed transition spools B and R, enhancing performance by providing faster and more consistent response times particularly when used as pilot controls. It operates without requiring a minimum hydraulic pressure, making it versatile across various applications. This model features fatigue-rated solenoid tube assemblies capable of handling services up to 5000 psi (350 bar), ensuring durability and reliability even under high-pressure conditions. The manual override option in the DMDAMAN728 is equipped with a detent mechanism meant for temporary actuation, with a mechanical life expectancy of approximately 7,000 cycles. Additionally, the valve incorporates EPDM seals suitable for systems using phosphate ester fluids; however, these seals must avoid exposure to petroleum-based fluids to prevent damage. The wet armature design of the DMDAMAN728 allows the working fluid to surround the armature which is beneficial in some scenarios but requires caution as prolonged energization can lead to fluid breakdown in certain types like water-glycol mixtures. For ease of integration and maintenance, its coils are interchangeable with other Sun Series 1 solenoid products and can be mounted flexibly on the tube. Further enhancing its utility, this valve features Sun's floating style construction which minimizes internal parts binding caused by excessive installation torque or variations in cavity/cartridge machining. With a maximum operating capacity of 12 gpm (45 L/min) and quick response times typically around 50 ms, the DMDAMAN728 is an efficient solution for sophisticated hydraulic systems requiring precise flow management and control.