SUN HYDRAULICS
DNCADWV928

***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 DNCADWV928 (DNCADWV928) is a solenoid-operated, 4-way, 2-position cartridge valve specifically designed for direct actuation and balanced spool directional control. This model features a closed transition between positions, significantly reducing oil loss during shifting, making it particularly beneficial in pilot control circuits where maintaining hydraulic integrity is crucial. Engineered for versatility, the DNCADWV928 allows for port 3 to serve as the inlet and port 1 as the tank outlet; however, it is important to note that while reverse flow is possible through the valve, optimal performance in this configuration cannot be guaranteed. The solenoid tube assembly of this valve is fatigue rated at 5000 psi (350 bar), ensuring durability even under high-pressure conditions. Additionally, no minimum hydraulic pressure is required for its operation. This valve incorporates a wet armature design where the working fluid surrounds the armature. This design consideration is vital as prolonged energization of the coil can lead to heat generation affecting certain hydraulic fluids like water-glycol mixtures by breaking them down into varnishes that could impair cartridge function. The DNCADWV928 offers a variety of coil termination and voltage options, including models with surge protection. Its coils are interchangeable with other Sun Series 1 solenoid products and can be installed in either orientation on the tube. For environmental resilience, additional weatherized coils and kits are available. The construction utilizes Sun's floating style which minimizes internal parts binding that could result from excessive installation torque or variations in cavity/cartridge machining. This model operates with a maximum capacity of 8 gpm (30 L/min) and can handle pressures up to 5000 psi (350 bar). Response times are typically around 50 ms, and it supports switching frequencies up to 15000 cycles per hour. The manual override features require minimal force, further enhancing operational convenience and reliability.