SUN HYDRAULICS
NFEDKHV

***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 NFEDKHV (NFEDKHV) is a versatile needle valve designed for precise flow regulation in hydraulic systems. This fully adjustable orifice device allows for seamless control of fluid flow, ranging from completely closed to the maximum orifice diameter, making it ideal for use as a flow control or shutoff valve. The NFEDKHV model is not pressure compensated, meaning the fixed orifice size regulates flow proportionally to the square root of the pressure differential across ports 1 and 2. It features a balanced adjustment mechanism that ensures easy operation even under high pressures, and its sharp-edged orifice design minimizes flow variations due to changes in fluid viscosity. The valve's bidirectional flow path offers flexibility in system design, with a preferred path from port 1 to port 2 for compatibility with other flow controls. When fully closed, the adjustment mechanism ensures zero leakage. The NFEDKHV is compatible with EPDM seals for systems using phosphate ester fluids; however, these seals are not suitable for petroleum-based fluids. Key specifications include a capacity of 90 gpm (340 L/min) and a maximum operating pressure of 5000 psi (350 bar). The valve allows up to 5.5 counterclockwise turns from fully closed to fully open positions and requires specific torque settings for installation and locknut adjustments. The model weighs approximately 1.30 lb (0.60 kg) and is installed with Viton seal kits where applicable. This needle valve is part of Sun Hydraulics' interchangeable cartridge series, ensuring functional compatibility within its cavity size class while maintaining consistent performance across various applications.