SUN HYDRAULICS
NEEDLE CARTRDGE
NCFBKAN

***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 NCFBKAN (NCFBKAN) is a needle valve with a reverse flow check feature, designed to provide fully adjustable orifices for regulating flow. This valve allows for infinite adjustments from fully closed to the maximum orifice diameter, making it versatile for various applications requiring precise flow control. It features an integral high-capacity check valve that permits unrestricted flow from port 2 to port 1, though it is not pressure compensated. The NCFBKAN model is part of a series where all 2-port flow control cartridges are physically and functionally interchangeable, sharing the same flow path and cavity size for a given frame size, although cartridge extension dimensions may differ. 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 ensures easy adjustments even under high pressures, while its sharp-edged orifice design minimizes variations in flow due to changes in viscosity. The valve incorporates Sun's floating style construction, reducing the risk of internal parts binding from excessive installation torque or machining variations. Key specifications include a cavity size of T-16A Series 3 with a capacity of 30 gpm (120 L/min) and a maximum operating pressure of 5000 psi (350 bar). The maximum valve leakage at 110 SUS (24 cSt) is limited to 10 drops/min (0.7 cc/min). Adjustments can be made over 5.5 turns from fully closed to fully open. The valve has a hex size of 1-1/4 inches and requires an installation torque between 150-160 lbf ft (203-217 Nm). Additionally, it includes an internal hex adjustment screw and locknut with specific torque requirements. The model weight is approximately 1.30 lb (0.60 kg), and it uses Viton seals for durability in various conditions.