SUN HYDRAULICS
DMDATRV636

***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 DMDATRV636 (DMDATRV636) is a high-performance, solenoid-operated 3-way, 2-position cartridge valve. This direct-acting, balanced spool directional valve is designed for robust service with a fatigue rating for up to 5000 psi (350 bar). It features closed spools B and R during the transition between positions, optimizing performance by providing faster and more consistent response times, especially suitable for pilot control applications where capacity is less critical. The valve operates without requiring a minimum hydraulic pressure, enhancing its versatility in various applications. Models with the D or L control include a detent mechanism in the manual override intended for temporary actuation, with a mechanical life expectancy of about 7,000 cycles. It is important to note that cartridges equipped with EPDM seals are specifically designed for systems using phosphate ester fluids; exposure to petroleum-based fluids can damage these seals. Additionally, this model utilizes a wet armature design where the working fluid surrounds the armature. This design consideration is crucial when the coil remains energized for extended periods as it can lead to breakdowns in certain fluids like water-glycol mixtures due to heat exposure. The interchangeable coils with other Sun Series 1 solenoid products provide flexibility and ease of maintenance. This valve also incorporates Sun's floating style construction which minimizes potential internal parts binding caused by excessive installation torque or cavity/cartridge machining variations. Key specifications include a flow capacity of 12 gpm (45 L/min), typical response time of 50 ms, and maximum operating pressure of 5000 psi (350 bar). The design ensures reliability and efficiency in demanding environments where precise fluid control is essential.