SUN HYDRAULICS
DMDADAV297

***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 DMDADAV297 (DMDADAV297) is a high-performance solenoid-operated 3-way, 2-position cartridge valve designed for demanding hydraulic applications. This direct-acting, balanced spool directional valve features a robust construction that includes a fatigue-rated solenoid tube assembly for up to 5000 psi (350 bar) service, ensuring reliable operation under high-pressure conditions. The valve's spools, identified as B and R, are closed during the transition between their two positions to enhance performance limits while sacrificing some capacity. This characteristic is particularly beneficial in pilot control applications where capacity is less critical but fast and consistent response times are essential. The DMDADAV297 operates without requiring a minimum hydraulic pressure, making it versatile for various system configurations. It includes manual override options with detent mechanisms designed for temporary actuation, supporting mechanical life expectancy around 7,000 cycles. Special attention is given to the compatibility of seal materials; cartridges equipped with EPDM seals are specifically intended for use with phosphate ester fluids and must avoid exposure to petroleum-based substances to prevent seal damage. This model utilizes a wet armature design where the working fluid surrounds the armature which can be critical if the coil remains energized for extended periods due to potential breakdowns in certain fluid types like water-glycol mixtures. Additionally, its coils are interchangeable with other Sun Series 1 solenoid products and can be mounted in either direction on the tube. The construction also incorporates Sun\u2019s floating style design which minimizes internal part binding caused by excessive installation torque or variations in cavity/cartridge machining. Key specifications include a flow capacity of 12 gpm (45 L/min), maximum operating pressure of 5000 psi (350 bar), typical response time of 50 ms, and maximum valve leakage at 110 SUS (24 cSt) being 5 in\u00b3/min at 3000 psi (80 cc/min at 210 bar). The valve's switching frequency capability reaches up to 15,000 cycles per hour, providing robust performance for intensive usage scenarios.