SUN HYDRAULICS
DMDAXAV828

***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 DMDAXAV828 (DMDAXAV828) is a high-performance solenoid-operated 3-way, 2-position cartridge valve designed for direct-acting, balanced spool directional control in hydraulic systems. With a maximum operating pressure of 5000 psi (350 bar) and a flow capacity of up to 12 gpm (45 L/min), this valve is engineered to handle demanding applications. The DMDAXAV828 features a unique closed transition between spool positions B and R, enhancing performance by providing faster and more consistent response times, especially useful in pilot control applications where capacity is less critical. This valve operates without requiring a minimum hydraulic pressure, making it versatile for various system conditions. It includes options for manual override controls (D, L, T types), which are primarily intended for temporary actuation with a mechanical life expectancy of around 7,000 cycles. The DMDAXAV828 utilizes EPDM seals suitable for phosphate ester fluids but should not be exposed to petroleum-based fluids as they can damage the seals. The design incorporates a wet armature setup where the working fluid surrounds the armature; this is vital in managing heat during prolonged coil energization but requires consideration of fluid type due to potential breakdown and varnish formation. Interchangeability with other Sun Series 1 solenoid products offers flexibility in system design, allowing coils to be mounted in either direction on the tube. Additionally, the valve benefits from Sun\u2019s floating style construction which minimizes internal part binding caused by excessive installation torque or cavity/cartridge machining variations. Key specifications include a typical response time of 50 ms and maximum valve leakage at 110 SUS (24 cSt) being limited to 5 in\u00b3/min at 3000 psi (80 cc/min at 210 bar). The manual override requires an actuation force of about 5 lbs at 1000 psi per port. This robust and reliable valve solution meets stringent requirements while providing exceptional operational flexibility and durability.