SUN HYDRAULICS
NFDCOBV

***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 NFDCOBV (Material Number: NFDCOBV) is a versatile needle valve designed for precise flow regulation in hydraulic systems. This fully adjustable orifice valve can be set from fully closed to the maximum orifice diameter, making it suitable for applications requiring variable flow control or shutoff capabilities. It is not pressure compensated, meaning the flow rate is dependent on the pressure differential across its ports. The valve features a balanced adjustment mechanism for easy operation even under high pressures, and its sharp-edged orifice design minimizes flow variations due to changes in fluid viscosity. The bidirectional flow path allows interchangeability with other flow controls, with a preferred direction from port 1 to port 2. This model has a cavity type of T-5A and falls under Series 2, with a capacity of handling up to 12 gpm (45 L/min) at a maximum operating pressure of 5000 psi (350 bar). Its adjustment range spans 5.5 counterclockwise turns from fully closed to fully open. The valve's installation requires a torque of 45-50 lbf ft (61-68 Nm), and it comes with an internal hex size of 5/32 in. (4 mm) for the adjustment screw and a locknut hex size of 9/16 in. (15 mm), which requires a torque of 80-90 lbf in. (9-10 Nm). The model weighs approximately .60 lb (.30 kg). Additionally, this cartridge valve can be configured with EPDM seals for compatibility with phosphate ester fluids, although exposure to petroleum-based fluids should be avoided as it may damage the seals. For enhanced durability, Sun Hydraulics offers zinc-nickel plating options for corrosion resistance on their cartridges, including this model.