SUN HYDRAULICS
VALVE
NFEDHHV

***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 NFEDHHV (Material Number: NFEDHHV) is a versatile needle valve designed as a fully adjustable orifice to regulate flow in hydraulic systems. This valve is infinitely adjustable from fully closed to its maximum orifice diameter, allowing it to function effectively as either a flow control or shutoff valve. Although not pressure compensated, it maintains functionality across various applications due to its bidirectional flow path, with the preferred direction being port 1 to 2 for interchangeability with other flow controls. The NFEDHHV features a balanced adjustment mechanism that facilitates easy adjustments even under high-pressure conditions, and its sharp-edged orifice design minimizes flow variations caused by changes in fluid viscosity. This needle valve is compatible with systems using phosphate ester fluids when configured with EPDM seals; however, these seals are susceptible to damage if exposed to petroleum-based fluids. The cartridge's physical and functional interchangeability allows it to fit within the same cavity size as other 2-port flow control cartridges, although extension dimensions from the mounting surface may differ. With a capacity of 90 gpm (340 L/min) and maximum operating pressure of 5000 psi (350 bar), the NFEDHHV is robust and reliable for demanding environments. It requires an installation torque of 150-160 lbf ft (203-217 Nm) and features an adjustment screw internal hex size of 5/32 in (4 mm). The locknut torque specification is between 80-90 lbf in (9-10 Nm). Weighing 1.30 lb (0.60 kg), this model provides efficient performance while ensuring no leakage when fully shut off.