SUN HYDRAULICS
DNCATLN628

***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 DNCATLN628 (DNCATLN628) is a solenoid-operated, 4-way, 2-position cartridge valve featuring a direct-acting, balanced spool directional design. This valve is particularly beneficial in pilot control circuits due to its closed transition between positions, which significantly reduces oil loss during shifting. It is designed with port 3 as the inlet and port 1 as the tank; while reverse flow is possible, it may not maintain the same performance standards. The solenoid tube assembly of this valve is rated for fatigue service up to 5000 psi (350 bar), and it operates without requiring a minimum hydraulic pressure. Cartridges equipped with EPDM seals are suitable for phosphate ester fluid systems, but exposure to petroleum-based substances can damage these seals. The valve's wet armature design means that working fluid surrounds the armature and can be affected by heat from prolonged coil energization\u2014fluids like water-glycol mixtures may degrade over time under these conditions. The DNCATLN628 offers various coil termination and voltage options, including those with surge protection. Its high-efficiency solenoid provides substantial spool actuating force per watt expended, ensuring reliable valve operation. Coils are interchangeable with other Sun Series 1 solenoid products and can be mounted in either direction on the tube. Coil connector options provide ratings up to IP69K for enhanced environmental protection. The valve incorporates Sun's floating style construction to reduce internal part binding due to excessive installation torque or machining variations in cavity or cartridge construction. This model fits into a T-31A cavity and supports a flow capacity of 8 gpm (30 L/min) at a maximum operating pressure of 5000 psi (350 bar). With response times around 50 ms and a switching frequency of up to 15,000 cycles per hour, this robust component is designed for demanding applications where reliability and efficiency are paramount.