SUN HYDRAULICS
DMDAMNV728

***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 DMDAMNV728 (DMDAMNV728) is a high-performance solenoid-operated 3-way, 2-position cartridge valve designed for robust hydraulic system applications. This direct-acting, balanced spool directional valve features a fatigue rating for up to 5000 psi (350 bar), making it suitable for high-pressure operations. The unique construction includes spools B and R, which are closed during the transition between their two positions to enhance performance limits while maintaining lower capacity. This feature is particularly beneficial in pilot control applications where consistent and fast response times are crucial. The DMDAMNV728 operates without the need for a minimum hydraulic pressure, facilitating its versatility in various system conditions. Models equipped with D or L control benefit from a detent mechanism in the manual override intended for temporary actuation, with a mechanical life expectancy of around 7,000 cycles. For systems utilizing phosphate ester fluids, cartridges configured with EPDM seals are recommended; however, these seals must avoid exposure to petroleum-based fluids which can cause damage. This valve incorporates a wet armature design where the working fluid surrounds the armature\u2014important to consider if the coil remains energized over extended periods due to potential breakdowns in certain fluids like water-glycol mixtures. Additionally, coils used with this model are interchangeable with other Sun Series 1 solenoid products and can be mounted either way on the tube. Key specifications include a maximum operating pressure of 5000 psi (350 bar), flow capacity up to 12 gpm (45 L/min), and typical response times around 50 ms. The Sun Hydraulics DMDAMNV728 also features floating style construction minimizing internal parts binding due to installation variances or cavity-cartridge machining differences, ensuring reliability and longevity in demanding environments.