SUN HYDRAULICS
NCECKDN

***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 NCECKDN (Material Number: NCECKDN) is a needle valve with a reverse-flow check, designed for precise flow regulation. This component functions as an adjustable orifice, allowing users to control flow from fully closed to the maximum orifice diameter. It features an integral high-capacity check valve that permits unrestricted flow from port 2 to port 1, although it is not pressure compensated. The needle valve's design ensures that all two-port flow control cartridges are interchangeable regarding flow path and cavity for a given frame size, though extension dimensions may differ. This non-compensating device regulates flow through the fixed orifice size in proportion to the square root of the pressure differential across ports 1 and 2. The balanced adjustment mechanism facilitates easy adjustments even under high pressure, while its sharp-edged orifice minimizes variations due to viscosity changes. Sun's floating style construction helps prevent internal parts from binding due to excessive installation torque or machining variations. Key specifications include a capacity of 3 gpm (11 L/min) with a maximum operating pressure of 5000 psi (350 bar). The valve leakage at 110 SUS (24 cSt) is minimal at just 5 drops/min (0.3 cc/min). The adjustment range spans 5.5 counterclockwise turns from fully closed to open, with various hex sizes and torques specified for installation and adjustments. Weighing in at .40 lb (.20 kg), this model uses Viton seal kits and employs Sun\u2019s durable construction materials for reliable performance in demanding applications.