SUN HYDRAULICS
NFDCOAN

***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 NFDCOAN (Material Number: NFDCOAN) 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 as both a flow control and shutoff valve. The needle valve is non-pressure compensated, meaning the fixed orifice size regulates flow based on the square root of the pressure differential across ports 1 and 2. Its balanced adjustment mechanism ensures easy operation even under high pressures, while the sharp-edged orifice design minimizes flow variations due to changes in fluid viscosity. This bidirectional valve prefers a flow path from port 1 to 2, ensuring compatibility with other flow control devices. Notably, there is no leakage when the valve is fully closed. The NFDCOAN model fits into a T-5A cavity and has a series capacity of 12 gpm (45 L/min) with a maximum operating pressure of 5000 psi (350 bar). The adjustment screw requires an internal hex size of 5/32 inches (4 mm), and installation demands specific torque settings for optimal performance: 45-50 lbf ft (61-68 Nm) for valve installation and 80-90 lbf in (9-10 Nm) for locknut torque. Weighing approximately .60 lb (.30 kg), this model can be equipped with Viton seals using seal kit number 990203006. Additionally, cartridges configured with EPDM seals are compatible with phosphate ester fluids but should not be exposed to petroleum-based substances to avoid damage.