SUN HYDRAULICS
DNCADTN728

***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 DNCADTN728 (DNCADTN728) is a high-performance, solenoid-operated, 4-way, 2-position cartridge valve designed for precise control in hydraulic systems. This direct-acting, balanced spool directional valve is notable for its closed transition between positions, which significantly reduces oil loss during shifting\u2014a critical feature for maintaining efficiency in pilot control circuits. With a capacity of 8 gpm/30 L/min based on port 3 as the inlet and port 1 as the tank, the valve ensures reliable operation even under reverse flow conditions, although optimal performance in this mode is not guaranteed. Constructed to handle a maximum operating pressure of 5000 psi (350 bar), this robust valve features a solenoid tube assembly that is fatigue rated for demanding applications. The DNCADTN728 requires no minimum hydraulic pressure to operate, thanks to its direct actuation design. It incorporates EPDM seals suitable for use with phosphate ester fluids; however, these seals must not be exposed to petroleum-based fluids as they can cause damage. Further enhancing its functionality, the DNCADTN728 uses a wet armature design where the working fluid surrounds the armature. This setup needs consideration if the coil is energized continuously due to potential heat buildup affecting fluid integrity over time. The valve also boasts a variety of coil termination and voltage options and offers interchangeable coils with other Sun Series 1 solenoid products. These coils can be mounted in either direction on the tube and come with connector options rated up to IP69K for superior environmental protection. Additionally, this model benefits from Sun\u2019s floating style construction which minimizes internal parts binding caused by excessive installation torque or variations in cavity/cartridge machining. With its efficient magnetic design that maximizes spool actuating force per watt expended, the DNCADTN728 provides reliable and consistent valve shifting essential for advanced hydraulic system applications.