SUN HYDRAULICS
DMDAMAN812

***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 DMDAMAN812 (DMDAMAN812) is a high-performance, solenoid-operated 3-way, 2-position cartridge valve. This direct-acting, balanced spool directional valve is designed for robust service with a fatigue rating for 5000 psi (350 bar). Notably, it features closed transitions between Spools B and R, enhancing performance at the cost of capacity, which is ideal in pilot control applications where fast and consistent response times are critical rather than flow capacity. The DMDAMAN812 operates without requiring a minimum hydraulic pressure, making it highly effective in various fluid power applications. It includes manual override options with the D or L control having a detent mechanism designed primarily for temporary actuation. The mechanical life expectancy of these manual controls is approximately 7,000 cycles. Additionally, the valve is equipped with EPDM seals suitable for phosphate ester fluids but should avoid exposure to petroleum-based substances to prevent seal damage. This model employs a wet armature design; thus, the working fluid surrounds the armature which may expose it to heat if the coil remains energized over extended periods. This aspect needs consideration especially when using fluids like water-glycol mixtures that degrade under high temperatures. Interchangeability of coils with other Sun Series 1 solenoid products adds versatility to this unit as coils can be mounted in either direction on the tube. Moreover, Sun Hydraulics' floating style construction in this model minimizes internal parts binding that could arise from excessive installation torque or cavity/cartridge machining variations. With a switching frequency of up to 15,000 cycles per hour and typical response times around 50 ms, the DMDAMAN812 offers reliable operational efficiency for demanding hydraulic systems.