SUN HYDRAULICS
DNDATRV228

***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 DNDATRV228 (DNDATRV228) is a solenoid-operated 4-way, 2-position cartridge valve featuring a direct-acting, balanced spool design. It is engineered for high-performance applications with a fatigue-rated solenoid tube assembly suitable for up to 5000 psi (350 bar) service. This valve operates without the need for minimum hydraulic pressure and offers multiple manual override options, though some are incompatible with weatherized coils. Notably, models with D or L control have a detent mechanism in the manual override designed for temporary actuation, with an estimated mechanical life of approximately 7,000 cycles. The DNDATRV228 is compatible with EPDM seals for systems using phosphate ester fluids but should avoid petroleum-based fluids to prevent seal damage. It employs a wet armature design that exposes working fluid to coil-generated heat, which may affect certain fluids like water-glycol mixtures over time. The solenoid's magnetic design enhances efficiency and spool actuation force per watt, ensuring reliable valve shifting. This cartridge valve offers various coil termination and voltage options, including surge protection capabilities. Coils are interchangeable within the Sun Series 1 solenoid products and can be mounted in either direction on the tube. Connector options provide ratings up to IP69K for enhanced environmental protection. The valve features Sun's floating style construction to reduce internal part binding due to installation torque or cavity machining variations. Additional specifications include a T31A cavity size, Series 1 classification, capacity of 10 gpm (40 L/min), typical response time of 50 ms, maximum leakage at specified conditions of 10 in\u00b3/min (160 cc/min), and switching frequency up to 15,000 cycles/hr. The manual override requires a force of 5 lbs/1000 psi and has a stroke length of .10 inches (2.5 mm). The valve's hex size measures .78 inches (22.2 mm), with an installation torque range of 30-35 lbf ft (41-47 Nm) and model weight approximately .60 lb (.30 kg).