SUN HYDRAULICS
NCFBYCN

***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 NCFBYCN (Material Number: NCFBYCN) is a needle valve with a reverse flow check, designed to provide precise flow regulation through an adjustable orifice. This component is infinitely adjustable from fully closed to the maximum orifice diameter and features an integral high-capacity check valve for unrestricted flow from port 2 to port 1. Notably, it is not pressure compensated, meaning that the fixed orifice size regulates flow in proportion to the square root of the pressure differential across ports 1 and 2. The needle valve incorporates a balanced adjustment mechanism, allowing for easy adjustments even under high pressure conditions. Its sharp-edged orifice design helps minimize variations in flow due to viscosity changes. Additionally, this product features Sun's floating style construction, which reduces the risk of internal parts binding due to excessive installation torque or variations in cavity/cartridge machining. It fits into a T-16A cavity and belongs to Series 3 with a capacity of 30 gpm (120 L/min) and a maximum operating pressure of 5000 psi (350 bar). The maximum valve leakage at 110 SUS (24 cSt) is limited to 10 drops/min (0.7 cc/min). The adjustment range spans up to five full counterclockwise turns from fully closed to fully open. For installation, the valve requires a torque between 150 and 160 lbf ft (203 - 217 Nm), while the locknut needs a torque between 80 and 90 lbf in (9 - 10 Nm). The valve weighs approximately 1.30 lb (0.60 kg) and uses Viton seal kits with part number 990-016-006 for maintenance purposes.