SUN HYDRAULICS
DMDALRV71299

***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 DMDALRV71299 (DMDALRV71299) is a high-performance solenoid-operated 3-way, 2-position cartridge valve designed for precise hydraulic control. This direct-acting, balanced spool directional valve is notable for its robust design, which includes a solenoid tube assembly rated for fatigue at 5000 psi (350 bar), ensuring reliable operation under high-pressure conditions. The valve features closed transitions between Spools B and R, optimizing performance by providing faster and more consistent response times, particularly beneficial when used as pilot controls where capacity is less critical. This model operates without requiring a minimum hydraulic pressure, adding to its versatility in various applications. It also features manual override options with a detent mechanism designed for temporary actuation; these are available in D or L control models. With a mechanical life expectancy of approximately 7,000 cycles and the ability to handle up to 12 gpm (45 L/min) flow capacity, it meets the demands of rigorous industrial applications. The valve incorporates EPDM seals suitable for systems using phosphate ester fluids; however, these seals must avoid exposure to petroleum-based fluids which could cause damage. Its wet armature design allows the working fluid to surround the armature which helps in heat management but requires consideration regarding fluid selection as some may degrade under prolonged exposure to heat. Furthermore, the DMDALRV71299 benefits from interchangeable coils with other Sun Series 1 solenoid products and features Sun's floating style construction that minimizes internal parts binding. This construction aids in maintaining performance consistency even when variations in installation torque or cavity/cartridge machining occur. With switch frequencies capable of reaching up to 15,000 cycles per hour and quick response times typically around 50 ms, this valve is engineered for both reliability and efficiency in complex hydraulic systems.