SUN HYDRAULICS
NFDCYAN

***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 NFDCYAN (NFDCYAN) is a versatile needle valve designed for precise flow regulation in hydraulic systems. This fully adjustable orifice allows for infinite adjustment from fully closed to the maximum orifice diameter, making it suitable for use as a flow control or shutoff valve. It is important to note that this needle valve is not pressure compensated, meaning the flow regulation depends on the square root of the pressure differential across its ports. The NFDCYAN model features a balanced adjustment mechanism, ensuring ease of use even under high-pressure conditions, and its sharp-edged orifice design minimizes flow variations due to changes in fluid viscosity. This bidirectional valve has a preferred flow path from port 1 to 2, allowing for interchangeability with other flow control devices. When in the shutoff position, it ensures no leakage occurs. The model supports a cavity size of T-5A and offers a capacity of up to 12 gpm (45 L/min) with a maximum operating pressure of 5000 psi (350 bar). It requires an installation torque between 45 and 50 lbf ft (61 - 68 Nm). The adjustment screw features an internal hex size of 5/32 inches (4 mm), and the locknut requires torque between 80 and 90 lbf in (9 - 10 Nm). Weighing just .60 lb (.30 kg), this needle valve can be equipped with EPDM seals specifically for systems utilizing phosphate ester fluids, as exposure to petroleum-based fluids could damage these seals. For those using Viton seals, the appropriate cartridge seal kit is available under part number 990203006.