SUN HYDRAULICS
NCFCHBN

***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 NCFCHBN (NCFCHBN) is a needle valve with a reverse flow check, designed to provide precise flow regulation in hydraulic systems. This component allows for continuous adjustment from fully closed to the maximum orifice diameter, making it highly versatile for various applications. The integrated high-capacity check valve ensures unrestricted flow from port 2 to port 1, although it is important to note that it is not pressure compensated. All two-port flow control cartridges are interchangeable in terms of flow path and cavity for a given frame size, although the extension dimensions may vary from the mounting surface. The non-compensating nature of needle valves means that the fixed orifice size regulates flow proportionally 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 the sharp-edged orifice design reduces flow variations caused by changes in fluid viscosity. The valve's construction features Sun's floating style design, which minimizes internal binding risks due to excessive installation torque or machining variations. This model fits a Cavity T-16A Series 3 and has a capacity of 15 gpm (60 L/min) with a maximum operating pressure of 5000 psi (350 bar). It exhibits minimal leakage at standard conditions, with an allowable leakage rate of up to five drops per minute at 110 SUS (24 cSt). The valve's adjustment range spans five counterclockwise turns from fully closed to fully open. Installation requires specific torques for both the valve and locknut, ensuring secure and reliable operation in demanding environments.