SUN HYDRAULICS
NFBCKCV

***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 NFBCKCV (NFBCKCV) is a versatile needle valve designed for precise flow regulation in hydraulic systems. This fully adjustable orifice allows for infinite control from fully closed to the maximum orifice diameter, making it suitable as both a flow control and shutoff valve. The valve is bidirectional, with a preferred flow path from port 1 to port 2, ensuring compatibility with other flow controls. Its balanced adjustment mechanism facilitates easy operation even under high pressures, while the sharp-edged orifice design minimizes flow variations due to changes in fluid viscosity. With a capacity of 5 gpm (20 L/min) and a maximum operating pressure of 5000 psi (350 bar), this cartridge is both physically and functionally interchangeable with other two-port flow control cartridges within its frame size, although extension dimensions from the mounting surface may vary. The NFBCKCV features no leakage when fully closed and incorporates Sun's floating style construction to reduce the risk of internal binding due to excessive torque or machining variations. It uses EPDM seals specifically for systems with phosphate ester fluids, as petroleum-based fluids can damage these seals. The valve has specific installation requirements: a hex size of 3/4 inch, an installation torque between 20-25 lbf ft (27-33 Nm), an adjustment screw internal hex size of 5/32 inch, and a locknut hex size of 9/16 inch requiring torque between 80-90 lbf in (9-10 Nm). Weighing just 0.20 lb (0.10 kg), this needle valve offers reliable performance for maintaining optimal flow in various hydraulic applications.