SUN HYDRAULICS
DNCALTV211

***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 DNCALTV211 (DNCALTV211) is a solenoid-operated, 4-way, 2-position cartridge valve designed for direct-acting, balanced spool directional control. This valve is engineered with a closed transition between positions to minimize oil loss during shifting, making it particularly suitable for pilot control circuits. The valve capacity assumes port 3 as the inlet and port 1 as the tank; while reverse flow is possible, it is not recommended due to potential performance inconsistencies. This robust component features a solenoid tube assembly rated for fatigue at 5000 psi (350 bar), allowing it to operate without requiring a minimum hydraulic pressure. The DNCALTV211 is compatible with EPDM seals for systems utilizing phosphate ester fluids; however, these seals are susceptible to damage from petroleum-based fluids. The wet armature design immerses the armature in the working fluid, which can lead to heat exposure if the coil remains energized over extended periods. This may affect certain fluids like water-glycol mixtures by forming varnishes that compromise valve function. Offering versatility in coil termination and voltage options, this model supports configurations with or without surge protection. Its high-efficiency solenoid ensures reliable spool actuation with minimal energy consumption. Coils are interchangeable within Sun Series 1 products and can be mounted bidirectionally on the tube. Coil connectors offer protection ratings up to IP69K for enhanced environmental resilience. Incorporating Sun's floating style construction minimizes internal binding risks due to installation torque variations or machining discrepancies in cavity/cartridge interfaces. The DNCALTV211 has a capacity of 8 gpm (30 L/min) and responds typically within 50 ms while maintaining maximum leakage of 10 in\u00b3/min at 3000 psi (160 cc/min at 210 bar). It supports a switching frequency of up to 15,000 cycles per hour and requires manual override force of approximately 5 lbs/1000 psi at Port 1.