SUN HYDRAULICS
DNCATCV728

***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 DNCATCV728 (DNCATCV728) is a solenoid-operated, 4-way, 2-position cartridge valve that features a direct-acting, balanced spool directional design. It offers a closed transition between positions, significantly reducing oil loss during shifting, which is particularly beneficial in pilot control circuits. The valve is designed with port 3 serving as the inlet and port 1 as the tank; while reverse flow is possible, optimal performance cannot be guaranteed and is not recommended. This model boasts a solenoid tube assembly rated for fatigue at 5000 psi (350 bar), ensuring robust performance under high-pressure conditions. Notably, this valve operates without requiring minimum hydraulic pressure due to its direct actuation. The DNCATCV728 utilizes EPDM seals for compatibility with phosphate ester fluids; however, these seals may be damaged by petroleum-based fluids. Its wet armature design allows the working fluid to surround the armature, which can impact fluid stability if the coil remains energized for extended periods. Various coil termination and voltage options are available to accommodate different application needs, many of which include surge protection for enhanced reliability. The high-efficiency solenoid within this valve delivers significant spool actuating force per watt consumed, ensuring reliable operation. Additionally, the coils are interchangeable with other Sun Series 1 solenoid products and can be mounted in either direction on the tube. Coil connectors provide ratings up to IP69K for superior environmental protection. This model incorporates Sun's floating style construction to minimize internal part binding due to excessive installation torque or machining variations in cavity/cartridge interfaces. With an impressive switching frequency of up to 15,000 cycles per hour and a maximum operating pressure of 5000 psi (350 bar), this valve is ideal for various demanding applications requiring precise control and durability.