SUN HYDRAULICS
HDDALCV71299

***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 HDDALCV71299 (HDDALCV71299) is a solenoid-after check cartridge hybrid valve designed to enhance hydraulic system efficiency. This valve combines a direct-acting solenoid poppet valve with a check function, enabling flow from inlet port 2 to system port 1, while blocking flow from port 2 to port 3 when the solenoid is de-energized. Ideal for lift-lower applications, this versatile component can be directly integrated into actuators and is suitable for load holding applications. The solenoid tube assembly supports service pressures up to 5000 psi (350 bar), ensuring durability in demanding environments. Notably, this cartridge offers several manual override options, including variants without manual overrides. For models equipped with D or L control, the detent mechanism in the manual override is intended for temporary actuation, boasting a mechanical life expectancy of approximately 7,000 cycles. However, it's important to note that manual override functionality is not compatible with weatherized coils. The HDDALCV71299 features a wet armature design where working fluid surrounds the armature and absorbs coil-generated heat\u2014an essential consideration during prolonged coil energization. Fluids such as water-glycol mixtures may degrade over time at elevated temperatures, potentially affecting valve performance. This valve supports interchangeable coils with Sun Series 1 solenoid products and can be mounted bidirectionally on the tube. Coil connector options provide ratings up to IP69K for enhanced environmental protection. Additionally, it incorporates Sun's floating style construction to reduce internal binding risks due to excessive installation torque or cavity-cartridge machining variations. With a cavity size of T-11A and capable of handling flows up to 10 gpm (40 L/min), this cartridge ensures reliable operation with minimal leakage at high pressures and offers rapid response times typical of 50 ms. Its robust design makes it an excellent choice for applications requiring precise control and reliability in hydraulic systems.