SUN HYDRAULICS
NCECYAV

***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 NCECYAV (Material Number: NCECYAV) is a needle valve with a reverse-flow check, designed for precise flow regulation. This valve features an adjustable orifice that can be set anywhere from fully closed to its maximum diameter, allowing for versatile control over fluid flow. It includes a high-capacity check valve that permits unrestricted flow from port 2 to port 1, although it is not pressure compensated. The design ensures that all 2-port flow control cartridges are interchangeable in terms of flow path and cavity size, though the extension dimensions may vary. The needle valve regulates flow based on the square root of the pressure differential between ports 1 and 2 due to its non-compensating nature. The balanced adjustment mechanism facilitates easy adjustments even under high pressures, while the sharp-edged orifice design minimizes variations caused by changes in fluid viscosity. The Sun floating style construction reduces the risk of internal parts binding due to excessive installation torque or machining variations in the cavity-cartridge interface. With a capacity of 3 gpm (11 L/min) and a maximum operating pressure of 5000 psi (350 bar), this valve is robust and reliable for demanding applications. Additional specifications include a maximum valve leakage rate of 5 drops/min at 110 SUS (24 cSt), with adjustment capabilities spanning up to 5.5 counterclockwise turns from fully closed to fully open. Installation requires a torque of 45-50 lbf ft (61-68 Nm), with specific dimensions for hex sizes and locknut torque provided for precise setup. The model weighs .40 lb (.20 kg) and uses Viton seal kits for optimal performance.