SUN HYDRAULICS
NFDCHBV

***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 NFDCHBV (NFDCHBV) is a versatile needle valve designed for precise flow regulation in hydraulic systems. This fully adjustable orifice valve allows users to control flow from a fully closed position to the maximum orifice diameter, making it suitable for use as both a flow control and a shutoff valve. It is important to note that this valve is not pressure compensated, meaning the flow regulation depends on the pressure differential across ports 1 and 2. The NFDCHBV features a balanced adjustment mechanism that facilitates easy adjustments even under high-pressure conditions, while its sharp-edged orifice design minimizes variations due to changes in fluid viscosity. This bidirectional valve has a preferred flow path from port 1 to port 2, ensuring compatibility with other flow controls. It guarantees no leakage when the adjustment mechanism is set to the shutoff position. The cartridge design allows for physical and functional interchangeability with other two-port flow control cartridges of the same frame size, although extension dimensions from the mounting surface may differ. The NFDCHBV supports maximum operating pressures of up to 5000 psi (350 bar) and has a capacity of 12 gpm (45 L/min). It features an adjustment range of 5.5 counterclockwise turns from fully closed to fully open, providing fine control over fluid flow. The installation requires specific torque settings: valve installation torque of 45-50 lbf ft (61-68 Nm) and locknut torque of 80-90 lbf in (9-10 Nm). Additionally, this model can be configured with EPDM seals for use with phosphate ester fluids; however, exposure to petroleum-based fluids should be avoided as it can damage these seals. The Sun Hydraulics NFDCHBV weighs approximately .60 lbs (.30 kg) and is compatible with Viton seal kits for enhanced durability.