SUN HYDRAULICS
NCFBKCV

***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 NCFBKCV (NCFBKCV) is a needle valve with a reverse flow check, designed as a fully adjustable orifice for precise flow regulation. It allows infinite adjustment from fully closed to the maximum orifice diameter, providing versatility in various applications. The valve features an integral high-capacity check valve that ensures unrestricted flow from port 2 to port 1. This model is not pressure compensated, making it crucial to consider the pressure differential across ports 1 and 2 when regulating flow, as the fixed orifice size will control flow proportionally to the square root of this differential. The balanced adjustment mechanism facilitates easy adjustments even under high pressures, and its sharp-edged orifice design minimizes variations in flow due to viscosity changes. Incorporating Sun's floating style construction minimizes internal binding risks due to excessive installation torque or machining variations in cavity-cartridge interfaces. The NCFBKCV fits into a T-16A series cavity and boasts a capacity of up to 30 gpm (120 L/min) with a maximum operating pressure of 5000 psi (350 bar). It has minimal leakage at standard conditions, specified at only ten drops per minute. The valve allows for up to five counterclockwise turns from fully closed to fully open positions, facilitating fine-tuning for different applications. Installation requires specific torque settings: the valve hex size is 1-1/4 inches with an installation torque of 150-160 lbf ft., while the locknut hex size is 9/16 inches requiring a torque of 80-90 lbf in. Weighing approximately 1.30 lbs (0.60 kg), it uses a Viton seal kit (990016006) for reliable sealing performance.