SUN HYDRAULICS
DMDADRN71299

***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 DMDADRN71299 (DMDADRN71299) is a high-performance, solenoid-operated 3-way, 2-position cartridge valve designed for precise control in hydraulic systems. This direct-acting, balanced spool directional valve is specifically engineered to handle a maximum operating pressure of 5000 psi (350 bar) and has a flow capacity of up to 12 gpm (45 L/min). The valve features closed transitions between spool positions B and R, enhancing performance by providing faster and more consistent response times, especially suitable for pilot control applications where capacity is less critical. The DMDADRN71299 incorporates a wet armature design allowing the working fluid to surround the armature; however, it's important to note that prolonged energization of the coil can lead to fluid degradation in the form of varnish, particularly with water-glycol mixtures. This model is also compatible with EPDM seals for systems using phosphate ester fluids but should avoid exposure to petroleum-based fluids which can damage these seals. Additionally, this valve supports interchangeable coils with other Sun Series 1 solenoid products and offers flexibility in mounting direction on the tube. It features Sun\u2019s floating style construction which minimizes internal parts binding due to installation torque or variations in cavity/cartridge machining. The manual override mechanism provided is intended for temporary actuation and has an estimated mechanical life expectancy of around 7,000 cycles. With a typical response time of 50 ms and maximum leakage at 5 in\u00b3/min at 3000 psi, the DMDADRN71299 ensures efficient performance and reliability in various hydraulic applications. Its robust design includes a manual override force requirement of approximately 5 lbs at 1000 psi per port and allows switching frequencies up to 15,000 cycles/hr. This compact yet powerful valve weighs about 0.60 lbs (0.30 kg) and requires an installation torque between 30 -35 lbf ft (41 -47 Nm), making it an optimal choice for dynamic hydraulic systems demanding precise control.