SUN HYDRAULICS
DMDAXRV71299

***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 DMDAXRV71299 (DMDAXRV71299) is a high-performance, solenoid-operated 3-way, 2-position cartridge valve designed for rigorous hydraulic applications. It features a direct-acting, balanced spool with closed transitions between positions B and R, enhancing performance by ensuring faster and more consistent response times ideal for pilot control systems where capacity is less critical. This valve operates without minimum hydraulic pressure, facilitating reliable performance in various conditions. The DMDAXRV71299 is equipped with a wet armature design; the working fluid surrounds the armature to manage the heat generated by the coil. This design consideration is crucial for applications where the coil remains energized over extended periods. However, it's important to note that certain fluids like water-glycol mixtures may degrade under prolonged exposure to heat, potentially leading to varnish formation which can impair valve function. This model incorporates Sun Hydraulics' floating style construction which minimizes internal parts binding caused by excessive installation torque or variations in cavity/cartridge machining. The valve supports a maximum operating pressure of 5000 psi (350 bar) and has a flow capacity of 12 gpm (45 L/min). Its response time is typically around 50 ms, and it has an impressive switching frequency of up to 15,000 cycles per hour. For maintenance or manual operation needs, this valve includes a detent mechanism in its manual override feature designed primarily for temporary actuation with a mechanical life expectancy of approximately 7,000 cycles. The interchangeable coils compatible with other Sun Series 1 solenoid products offer flexibility and ease of maintenance. Additionally, cartridges configured with EPDM seals are specifically intended for use with phosphate ester fluids; exposure to petroleum-based fluids should be avoided as it can damage these seals.