SUN HYDRAULICS
NCFBLDV

***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 NCFBLDV (NCFBLDV) is a versatile needle valve with a reverse flow check, designed for precise flow regulation in hydraulic systems. This component offers fully adjustable orifices, allowing for infinite settings from fully closed to the maximum orifice diameter. It features an integral high-capacity check valve that ensures unrestricted flow from port 2 to port 1, though it is not pressure compensated. The NCFBLDV model is part of the 2-port flow control cartridge family, known for their interchangeability in terms of flow path and cavity compatibility across different frame sizes. This needle valve operates based on the square root of the pressure differential across its ports due to its non-compensating nature. Its balanced adjustment mechanism facilitates easy adjustments even under high-pressure conditions, while the sharp-edged orifice design minimizes variations caused by changes in fluid viscosity. The floating style construction reduces the risk of internal binding due to excessive installation torque or machining discrepancies. Key specifications include a capacity of 30 gpm (120 L/min) and a maximum operating pressure of 5000 psi (350 bar). The valve's leakage rate at 110 SUS (24 cSt) is limited to 10 drops per minute (0.7 cc/min). It accommodates up to 5.5 counterclockwise turns from fully closed to fully open positions and requires specific installation torques: valve installation torque ranges between 150-160 lbf ft (203-217 Nm), while locknut torque ranges between 80-90 lbf in (9-10 Nm). The model weighs approximately 1.30 lb (0.60 kg) and utilizes Viton seal kits for optimal performance and durability in various hydraulic applications.