SUN HYDRAULICS
NCECHAN

***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 NCECHAN (NCECHAN) is a needle valve with a reverse flow check, designed to provide precise flow regulation in hydraulic systems. This component is fully adjustable, allowing for control from fully closed to the maximum orifice diameter, while an integral high-capacity check valve ensures unrestricted flow from port 2 to port 1. It is important to note that these needle valves are not pressure compensated, meaning the fixed orifice size regulates flow proportionally to the square root of the pressure differential across ports 1 and 2. The valve features a balanced adjustment mechanism for easy operation even under high pressures and incorporates a sharp-edged orifice design that minimizes flow variations due to viscosity changes. Additionally, it uses Sun's floating style construction to reduce the risk of internal part binding due to excessive installation torque or machining variations. This model fits into a T-5A cavity and has a series 2 capacity of 3 gpm (11 L/min) with a maximum operating pressure of 5000 psi (350 bar). The maximum valve leakage at 110 SUS (24 cSt) is minimal at just 5 drops/min (0.3 cc/min). Adjustment from fully closed to fully open requires approximately 5.5 counterclockwise turns. The valve hex size is 1-1/8 inches (28.6 mm), with an installation torque of 45-50 lbf ft (61-68 Nm). The adjustment screw internal hex size is 5/32 inches (4 mm), while the locknut hex size is 9/16 inches (15 mm) with a locknut torque specification of 80-90 lbf in (9-10 Nm). Weighing only .40 lb (.20 kg), this model also comes with an optional Viton seal kit for enhanced durability and performance in various applications.