SUN HYDRAULICS
DMDAMRN297

***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 DMDAMRN297 (DMDAMRN297) is a high-performance, solenoid-operated 3-way, 2-position cartridge valve designed for robust and efficient hydraulic flow control. This direct-acting, balanced spool directional valve features a fatigue-rated solenoid tube assembly suitable for up to 5000 psi (350 bar) service, ensuring durability and reliability under demanding conditions. The valve is particularly noted for its closed transition between Spools B and R, optimizing performance by providing faster and more consistent response times ideal for pilot control applications where capacity is less critical. The DMDAMRN297 operates without requiring a minimum hydraulic pressure, facilitating versatile usage in various hydraulic systems. It incorporates manual override options with detent mechanisms designed primarily for temporary actuation, highlighting a mechanical life expectancy of about 7,000 cycles. This model is compatible with EPDM seals specifically for use with phosphate ester fluids; however, it should not be used with petroleum-based fluids as they can damage the seals. In terms of construction, the DMDAMRN297 utilizes a wet armature design where the working fluid surrounds the armature. This setup aids in cooling but may affect fluid integrity if exposed to prolonged high temperatures. The model supports interchangeable coils from other Sun Series 1 solenoid products and features Sun's floating style construction which minimizes internal parts binding\u2014a common issue caused by excessive installation torque or cavity-cartridge machining variations. This valve supports up to 12 gpm (45 L/min) capacity and allows quick response times typically around 50 ms. It has been designed to handle switching frequencies up to 15,000 cycles per hour while maintaining maximum leakage control at high pressures. Its compact design includes features like manual override force requirements and stroke specifics tailored for precise operational control.