SUN HYDRAULICS
NCGCLAV

***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 NCGCLAV (NCGCLAV) is a needle valve with a reverse-flow check, designed for precise flow regulation in hydraulic systems. This valve offers fully adjustable orifices, allowing for infinite adjustment from fully closed to the maximum orifice diameter, making it suitable for applications requiring precise flow control. It features an integral high-capacity check valve that enables unrestricted flow from port 2 to port 1. However, it is important to note that this valve is not pressure compensated. All two-port flow control cartridges, including this model, are physically and functionally interchangeable within the same frame size, although the cartridge extension dimensions may vary. The NCGCLAV model operates with a balanced adjustment mechanism that facilitates easy adjustments even under high pressures. Its sharp-edged orifice design minimizes flow variations caused by changes in fluid viscosity. The valve incorporates Sun's floating style construction to reduce the risk of internal parts binding due to excessive installation torque or machining variations in the cavity and cartridge. Key specifications include a cavity size of T-18A and a series 4 capacity of 30 gpm (120 L/min). The maximum operating pressure is rated at 5000 psi (350 bar), with a maximum valve leakage at 110 SUS (24 cSt) of 5 drops/min (0.3 cc/min). The adjustment range spans up to 5.5 counterclockwise turns from fully closed to fully open. The valve's hex size measures 1-5/8 inches (41.3 mm), with an installation torque requirement of between 350 and 375 lbf-ft (474-508 Nm). Additionally, it includes an internal hex size for adjustment screws at 5/32 inches (4 mm) and a locknut hex size at 9/16 inches (15 mm), with locknut torque ranging from 80 to 90 lbf-in (9-10 Nm). The model weighs approximately 3 pounds (1.35 kg) and utilizes Viton seals as part of its standard seal kit configuration.