SUN HYDRAULICS
DMDATBN812N

***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 DMDATBN812N (DMDATBN812N) is a high-performance, solenoid-operated 3-way, 2-position cartridge valve designed for robust hydraulic system applications. It features a direct-acting, balanced spool directional valve mechanism that ensures reliable operation without the need for minimum hydraulic pressure. The valve is notably equipped with a fatigue-rated solenoid tube assembly capable of handling pressures up to 5000 psi (350 bar), making it suitable for high-pressure applications. This model incorporates closed transitions between Spools B and R, enhancing performance by providing faster and more consistent response times, particularly beneficial in pilot control setups where capacity is less critical. The valve's wet armature design allows the working fluid to surround the armature, which is advantageous for heat dissipation but requires careful consideration of fluid type due to potential breakdown and varnish formation from prolonged exposure to high temperatures. Interchangeability of coils with other Sun Series 1 solenoid products adds versatility, while the floating style construction minimizes internal binding risks caused by installation torque or machining variations. The manual override feature includes a detent mechanism designed for temporary actuation with a mechanical life expectancy of approximately 7,000 cycles. Additional specifications include a maximum flow capacity of 12 gpm (45 L/min), typical response time of 50 ms, and maximum leakage at 3000 psi being limited to 5 in\u00b3/min. The valve also supports a switching frequency up to 15,000 cycles per hour. For systems using phosphate ester fluids, cartridges configured with EPDM seals are recommended; however, these should not be exposed to petroleum-based fluids as they can damage the seals.