SUN HYDRAULICS
NCEBOEV

***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 NCEBOEV (NCEBOEV) is a needle valve with a reverse flow check, designed for precise flow regulation in hydraulic systems. This component is fully adjustable, allowing for infinite control 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, though it is important to note that it is not pressure compensated. The valve's design ensures interchangeability among all 2-port flow control cartridges of the same frame size and cavity, although cartridge extension dimensions may differ. The non-compensating nature of needle valves means that the fixed orifice size regulates flow proportional to the square root of the pressure differential across ports 1 and 2. A balanced adjustment mechanism facilitates easy adjustments even under high pressures, while a sharp-edged orifice minimizes flow variations due to viscosity changes. The cartridge uses Sun's floating style construction to reduce internal binding risks caused by excessive installation torque or machining variations. It has a capacity of 12 gpm (45 L/min) and can handle a maximum operating pressure of 5000 psi (350 bar). The valve exhibits minimal leakage at specified conditions and allows for five counterclockwise turns from fully closed to fully open. Installation specifications include a hex size of 1 1/8 inches and an installation torque between 45-50 lbf ft (61-68 Nm). This model weighs approximately .40 lb (0.20 kg) and includes an option for Viton seal kits for enhanced compatibility with various fluids, except petroleum-based ones which can damage EPDM seals used in some configurations.