SUN HYDRAULICS
NCFCLBV

***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 NCFCLBV (NCFCLBV) is a versatile needle valve with reverse flow check, designed for precise flow regulation in hydraulic systems. This valve is fully adjustable, offering infinite control from fully closed to the maximum orifice diameter, and features an integral high-capacity check valve that allows unrestricted flow from port 2 to port 1. Notably, it is not pressure compensated. The NCFCLBV is physically and functionally interchangeable with other 2-port flow control cartridges of the same frame size, although cartridge extension dimensions may vary. It operates by regulating flow in proportion to the square root of the pressure differential across ports 1 and 2 due to its non-compensating nature. The balanced adjustment mechanism facilitates easy adjustments even at high pressures, while the sharp-edged orifice design minimizes variations caused by changes in fluid viscosity. It incorporates Sun's floating style construction to reduce the risk of internal parts binding due to excessive installation torque or machining variations. The valve fits a T-16A cavity and has a capacity of 15 gpm (60 L/min) with a maximum operating pressure of 5000 psi (350 bar). It has minimal leakage at maximum conditions, only allowing up to five drops per minute at 110 SUS (24 cSt). The adjustment range spans up to five and a half counterclockwise turns from fully closed to fully open. Installation requires specific torques: a valve hex size of 1-1/4 inches (31.8 mm) with an installation torque between 150-160 lbf ft (203-217 Nm), an adjustment screw internal hex size of 5/32 inches (4 mm), and a locknut hex size of 9/16 inches (15 mm) with a torque requirement of 80-90 lbf in (9-10 Nm). The model weighs approximately 1.30 lb (0.60 kg) and uses Viton seal kits for reliable performance under various conditions.