SUN HYDRAULICS
DMDADNV948

***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 DMDADNV948 (DMDADNV948) is a solenoid-operated 3-way, 2-position cartridge valve that exemplifies precision and durability in hydraulic system applications. This direct-acting, balanced spool directional valve is designed to operate efficiently with no minimum hydraulic pressure requirement, making it highly versatile for various mechanical contexts. Notably, it features a fatigue rating for up to 5000 psi (350 bar), ensuring robust performance under high-pressure conditions. The DMDADNV948 is equipped with spools B and R that remain closed during the transition between positions, enhancing performance limits at the cost of lower capacity. However, this characteristic is beneficial when used as pilot controls where capacity is less critical but faster and more consistent response times are paramount. The valve's manual override options with the D or L control include a detent mechanism intended for temporary actuation, supporting a mechanical life expectancy of around 7,000 cycles. For environments utilizing phosphate ester fluids, cartridges configured with EPDM seals are recommended; however, these seals must not be exposed to petroleum-based fluids as they can cause damage. Additionally, the valve's wet armature design allows working fluid to surround the armature which may affect fluid integrity if exposed to prolonged heat. Further enhancing its adaptability, the DMDADNV948's coils are interchangeable with other Sun Series 1 solenoid products and can be mounted in either direction on the tube. This model also incorporates Sun's floating style construction which minimizes potential internal parts binding due to excessive installation torque or variations in cavity/cartridge machining. With a maximum operating pressure of 5000 psi (350 bar), typical response time of 50 ms, and a capacity of up to 12 gpm (45 L/min), this valve stands out for its high switching frequency of up to 15000 cycles/hr and minimal leakage at high pressures. It represents an optimal choice for systems requiring reliable directional control under varying operational demands.