SUN HYDRAULICS
NCFBKEN

***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 NCFBKEN (NCFBKEN) is a high-performance needle valve with a reverse flow check, designed to provide precise flow regulation in hydraulic systems. This valve features an infinitely adjustable orifice, allowing for fine-tuning from fully closed to the maximum orifice diameter. It incorporates an integral high-capacity check valve that ensures unrestricted flow from port 2 to port 1, making it ideal for applications requiring controlled fluid dynamics without pressure compensation. The NCFBKEN is part of the 2-port flow control cartridge series, ensuring physical and functional interchangeability within the same frame size, although extension dimensions may vary. Key specifications include a cavity size of T-16A Series 3 with a capacity of up to 30 gpm (120 L/min), and it can withstand a maximum operating pressure of 5000 psi (350 bar). The valve's design includes a balanced adjustment mechanism for easy modifications even under high pressures and a sharp-edged orifice to minimize variations due to changes in fluid viscosity. To prevent internal binding due to installation torque or machining variations, it uses Sun's floating style construction. The NCFBKEN model requires specific installation torques: the valve hex size is 1-1/4 inches with an installation torque of 150 - 160 lbf ft (203 - 217 Nm), while the locknut hex size is 9/16 inches with a torque requirement of 80 - 90 lbf in (9 - 10 Nm). For adjustments, it offers up to five turns from fully closed to fully open using an internal hex size of 5/32 inches. The unit weighs approximately 1.30 lb (0.60 kg) and utilizes Viton seals for durability and reliability under various operating conditions.