SUN HYDRAULICS
NFFCKGN

***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 NFFCKGN (NFFCKGN) is a versatile needle valve designed for precise flow regulation in hydraulic systems. This fully adjustable orifice is capable of being finely tuned from fully closed to its maximum orifice diameter, allowing it to function effectively as either a flow control or shutoff valve. It features a balanced adjustment mechanism that facilitates easy adjustments even under high pressure conditions, enhancing usability and precision. The sharp-edged orifice design minimizes flow variations due to changes in fluid viscosity, ensuring consistent performance across a range of operating conditions. This bidirectional valve prefers a flow path from port 1 to port 2, which aligns with other interchangeable flow control devices. It guarantees zero leakage when the adjustment mechanism is in the shutoff position. The NFFCKGN model is configured with EPDM seals, specifically suited for systems utilizing phosphate ester fluids; however, these seals are not compatible with petroleum-based fluids, greases, or lubricants. The valve fits into a Cavity T-18A and belongs to Series 4 with a capacity of 60 gpm (240 L/min). It operates at a maximum pressure of 5000 psi (350 bar) and requires an installation torque between 350 and 375 lbf ft (474 to 508 Nm). The adjustment screw features an internal hex size of 5/32 inch (4 mm), while the locknut has a hex size of 9/16 inch (15 mm), requiring a torque between 80 and 90 lbf in (9 to 10 Nm). Weighing approximately 3.00 lb (1.35 kg), this model is compatible with Viton seal kits for maintenance purposes.