SUN HYDRAULICS
DMDAMNN71219

***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 DMDAMNN71219 (DMDAMNN71219) is a high-performance solenoid-operated 3-way, 2-position cartridge valve designed for use in hydraulic systems. This direct-acting, balanced spool directional valve operates without the need for minimum hydraulic pressure, enhancing its versatility across various applications. The valve features a robust construction with a fatigue rating of 5000 psi (350 bar), making it suitable for demanding environments. The DMDAMNN71219 is equipped with spools B and R that are closed during the transition between positions, which optimizes performance by offering faster and more consistent response times, particularly beneficial when used as pilot controls. The manual override in models with D or L control includes a detent mechanism designed for temporary actuation, with a mechanical life expectancy of approximately 7,000 cycles. This model uses EPDM seals appropriate for systems containing phosphate ester fluids; however, these seals are susceptible to damage if exposed to petroleum-based fluids. It incorporates a wet armature design where the working fluid surrounds the armature which could be critical if the coil remains energized over extended periods. This design detail is crucial as some fluids can degrade under prolonged exposure to heat. Interchangeability of coils with other Sun Series 1 solenoid products adds flexibility to this model, allowing coils to be mounted in either direction on the tube. Additionally, it employs Sun's floating style construction which minimizes internal parts binding due to excessive installation torque or cavity/cartridge machining variations. With a maximum operating capacity of 12 gpm (45 L/min) and rapid response times typically around 50 ms, this valve is an efficient solution for high-frequency applications up to 15,000 cycles per hour. Its compact size and manual override features make it both practical and reliable for specialized hydraulic applications.