SUN HYDRAULICS
DMDAXNN636

***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 DMDAXNN636 (DMDAXNN636) is a high-performance solenoid-operated 3-way, 2-position cartridge valve. This direct-acting, balanced spool directional valve features a robust design meant to handle maximum operating pressures up to 5000 psi (350 bar), making it suitable for a wide range of hydraulic applications. The solenoid tube assembly is notably fatigue rated for high-pressure service, ensuring durability and reliability in demanding environments. This model's spools B and R are closed in the transition between positions, which enhances performance at the cost of lower capacity. However, this feature is advantageous when used as pilot controls where capacity is less critical, as it ensures faster and more consistent response times. The valve does not require any minimum hydraulic pressure to operate due to its direct actuation. For manual override options, the DMDAXNN636 comes equipped with a detent mechanism designed for temporary actuation with an expected mechanical life of approximately 7,000 cycles. Additionally, the cartridges configured with EPDM seals are specifically intended for systems utilizing phosphate ester fluids; however, they must avoid exposure to petroleum-based substances which can damage the seals. The valve employs 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 fluid degradation at elevated temperatures. The interchangeable coils with other Sun Series 1 solenoid products add versatility and ease of maintenance to this component. Moreover, incorporating Sun's floating style construction minimizes internal parts binding due to excessive installation torque or cavity/cartridge machining variations. With a flow capacity of up to 12 gpm (45 L/min) and rapid response times typical at 50 ms, this valve is tailored for applications requiring precise control and reliable operation under high pressure conditions.