SUN HYDRAULICS
NCFBLDN

***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 NCFBLDN (NCFBLDN) is a needle valve with a reverse-flow check, designed to provide fully adjustable orifice regulation for flow control applications. This versatile component is capable of precise flow adjustments from fully closed to the maximum orifice diameter, making it suitable for various hydraulic systems. It features an integral high-capacity check valve that allows unrestricted flow from port 2 to port 1, although it is not pressure compensated. The valve's design includes a balanced adjustment mechanism for easy handling even under high pressures and a sharp-edged orifice that minimizes flow variations due to viscosity changes. The Sun floating style construction helps prevent internal parts from binding due to excessive installation torque or machining variations. This model fits into the T-16A cavity and belongs to Series 3, with a capacity of up to 30 gpm (120 L/min) and can withstand a maximum operating pressure of 5000 psi (350 bar). The valve exhibits minimal leakage at 110 SUS (24 cSt), with only 10 drops/min (0.7 cc/min). It offers an adjustment range of up to five counterclockwise turns from fully closed to open, and its physical dimensions include a valve hex size of 1-1/4 inches (31.8 mm) and an installation torque requirement of 150-160 lbf ft (203-217 Nm). Additional specifications include an internal hex size for the adjustment screw at 5/32 inches (4 mm), a locknut hex size of 9/16 inches (15 mm), and locknut torque between 80-90 lbf in (9-10 Nm). Weighing in at approximately 1.30 lb (0.60 kg), this needle valve comes with a Viton seal kit under cartridge number 990016006.