SUN HYDRAULICS
DMDALPN728

***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 DMDALPN728 (DMDALPN728) is a high-performance solenoid-operated 3-way, 2-position cartridge valve designed for precision hydraulic control. This direct-acting, balanced spool directional valve is fatigue rated for demanding 5000 psi (350 bar) service applications, ensuring robust and reliable performance in a variety of settings. The valve features closed transitions between Spools B and R, optimizing performance by allowing faster and more consistent response times especially suitable for pilot controls where capacity is less critical. This model is engineered to operate without minimum hydraulic pressure, facilitating its use in low-pressure environments. It includes a manual override with a detent mechanism designed primarily for temporary actuation. Depending on the model configuration, the mechanical life expectancy of the manual control assembly can reach up to 7,000 cycles. The DMDALPN728 utilizes EPDM seals when configured for use with phosphate ester fluids; however, these seals must not be exposed to petroleum-based fluids as they can cause damage. The design incorporates a wet armature setup where the working fluid surrounds the armature which may affect fluid integrity under prolonged energization due to heat exposure. The valve's compatibility with interchangeable coils from other Sun Series 1 solenoid products adds versatility to its design. Additionally, it employs Sun's floating style construction that minimizes internal parts binding caused by excessive installation torque or variations in cavity/cartridge machining. Key specifications include a maximum flow capacity of 12 gpm (45 L/min), typical response times of 50 ms, and maximum leakage at 3000 psi rated at 5 in\u00b3/min (80 cc/min). This model also supports a switching frequency up to 15,000 cycles/hr and requires manual override force of about 5 lbs at 1000 psi for port activation. The compact and efficient design makes the Sun Hydraulics DMDALPN728 an excellent choice for sophisticated hydraulic systems requiring precise control and durability.