SUN HYDRAULICS
NCEBYEN

***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 NCEBYEN (NCEBYEN) is a needle valve with a reverse flow check, designed to regulate hydraulic flow through an adjustable orifice. This model allows for infinite adjustment from fully closed to the maximum orifice diameter, enabling precise control over fluid dynamics in various applications. It features an integral high-capacity check valve that permits unrestricted flow from port 2 to port 1, although it is not pressure compensated. The NCEBYEN model is part of Sun Hydraulics' line of 2-port flow control cartridges, which are interchangeable in terms of flow path and cavity for a given frame size, though extension dimensions may differ. The valve's balanced adjustment mechanism ensures ease of operation even under high pressures, while the sharp-edged orifice design minimizes flow variations due to changes in fluid viscosity. This model incorporates Sun's floating style construction to prevent internal binding from excessive installation torque or machining variations. It is compatible with systems using phosphate ester fluids when configured with EPDM seals; however, exposure to petroleum-based fluids can cause seal damage. The NCEBYEN has a maximum operating pressure of 5000 psi (350 bar) and a capacity of 12 gpm (45 L/min). It features a valve hex size of 1-1/8 inches and requires an installation torque between 45-50 lbf ft (61-68 Nm). The adjustment screw uses an internal hex size of 5/32 inches, while the locknut requires a hex size of 9/16 inches and torque between 80-90 lbf in (9-10 Nm). Weighing approximately .40 lb (.20 kg), this needle valve offers reliable performance for controlling hydraulic systems efficiently.