SUN HYDRAULICS
DNCALZN72499

***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 DNCALZN72499 (DNCALZN72499) is a solenoid-operated, 4-way, 2-position cartridge directional valve featuring a direct-acting, balanced spool design. Its closed transition between positions minimizes oil loss during shifting, making it particularly suitable for pilot control circuits. The valve's capacity is optimized with port 3 as the inlet and port 1 as the tank, although reverse flow is possible but not recommended due to performance inconsistency. The solenoid tube assembly can withstand up to 5000 psi (350 bar), and the valve operates without requiring a minimum hydraulic pressure. It supports EPDM seals for use with phosphate ester fluids, while exposure to petroleum-based substances can damage the seals. The DNCALZN72499 utilizes a wet armature design where working fluid surrounds the armature and absorbs heat from the coil, which may affect performance over prolonged energization periods. This characteristic is especially relevant when using water-glycol mixtures that can degrade into varnishes at high temperatures. The valve offers various coil termination and voltage options, some with surge protection, enhancing its adaptability across applications. Its high-efficiency solenoid design ensures reliable valve shifting by delivering substantial spool actuating force per watt expended. Interchangeable coils are compatible with other Sun Series 1 solenoid products and can be mounted in either direction on the tube. Coil connector options provide protection ratings up to IP69K for robust environmental resistance. The valve incorporates Sun's floating style construction to reduce internal part binding risks due to excessive installation torque or machining variations in cavities/cartridges. This model features a T-31A cavity, Series 1 classification, an 8 gpm (30 L/min) capacity, and can handle a maximum operating pressure of 5000 psi (350 bar). It exhibits typical response times of 50 ms and minimal leakage at specified conditions while supporting up to 15,000 cycles per hour switching frequency.