SUN HYDRAULICS
DNDATRN299

***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 DNDATRN299 (DNDATRN299) is a solenoid-operated 4-way, 2-position cartridge valve designed for direct-acting, balanced spool directional control. This model is rated for a maximum operating pressure of 5000 psi (350 bar) and features a fatigue-rated solenoid tube assembly suitable for rigorous applications. The valve's design allows it to function without requiring a minimum hydraulic pressure, making it versatile in various hydraulic systems. It incorporates several manual override options, although manual override functionality is not compatible with weatherized coils. For models with the D or L control, the detent mechanism in the manual override supports temporary actuation with an estimated mechanical life expectancy of 7,000 cycles. This valve is equipped with EPDM seals suitable for systems using phosphate ester fluids; however, exposure to petroleum-based substances can damage these seals. The wet armature design ensures that the working fluid surrounds the armature, which can be relevant when considering heat dissipation if the coil remains energized for extended periods. A variety of coil termination and voltage options are available to suit specific needs, offering configurations with or without surge protection. The solenoid's magnetic design enhances efficiency by delivering high actuating force per watt expended, ensuring reliable valve operation. Coils are interchangeable within Sun Series 1 solenoid products and can be mounted bidirectionally on the tube. With coil connector options rated up to IP69K and additional weatherized kits available, this valve provides robust environmental protection. The floating style construction reduces internal binding risks due to installation torque or machining variations within the cavity/cartridge interface. Key specifications include a capacity of 10 gpm (40 L/min), typical response time of 50 ms, and switching frequency capability up to 15,000 cycles per hour. This model requires a manual override force of 5 lbs/1000 psi at Port 1 and has a stroke length of .10 inches (2.5 mm).