SUN HYDRAULICS
DMDAMRN71219

***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 DMDAMRN71219 (DMDAMRN71219) is a high-performance solenoid-operated 3-way, 2-position cartridge valve designed for precise hydraulic fluid direction control. This model is distinguished by its direct-acting, balanced spool design which ensures reliable operation without the need for minimum hydraulic pressure. The valve features a fatigue rating for 5000 psi (350 bar) service, making it robust for demanding applications. The DMDAMRN71219 incorporates closed transitions between Spools B and R, enhancing performance by providing faster and more consistent response times, particularly useful in pilot control applications where capacity is less critical. The manual override options available with this model include D or L controls, which are intended for temporary actuation with a mechanical life expectancy of approximately 7,000 cycles. Designed to accommodate various system requirements, this valve supports cartridges configured with EPDM seals specifically for use with phosphate ester fluids; however, these seals are susceptible to damage when exposed to petroleum-based fluids. It utilizes a wet armature design where the working fluid surrounds the armature. This setup helps in heat management but requires consideration of fluid characteristics as some may degrade under prolonged exposure to heat. Interchangeability of coils with other Sun Series 1 solenoid products adds flexibility in maintenance and upgrades, allowing coils to be mounted on the tube in either orientation. The construction of the valve minimizes internal part binding due to installation variances or cavity/cartridge machining differences. Key specifications include a maximum flow capacity of 12 gpm (45 L/min), typical response time of 50 ms, and a switching frequency capable of handling up to 15,000 cycles per hour.