SUN HYDRAULICS
NEEDLE CARTRDGE
NCGBLAN

***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 NCGBLAN (NCGBLAN) is a needle valve featuring a reverse flow check, designed for precise flow regulation in hydraulic systems. This valve is fully adjustable from a closed position to its maximum orifice diameter, allowing for fine-tuned control of fluid flow. It incorporates an integral high-capacity check valve that permits unrestricted flow from port 2 to port 1, though it is important to note that this model is not pressure compensated. The NCGBLAN's design ensures physical and functional interchangeability among all 2-port flow control cartridges of the same frame size, although the cartridge extension dimensions may vary. The valve operates on a principle where the fixed orifice size regulates flow in proportion to the square root of the pressure differential across ports 1 and 2, due to its non-compensating nature. A balanced adjustment mechanism facilitates easy adjustments even under high pressures, while its sharp-edged orifice design minimizes variations in flow caused by changes in fluid viscosity. The NCGBLAN model also features Sun's floating style construction, reducing the risk of internal parts binding due to excessive installation torque or machining variations. It is compatible with phosphate ester fluids when configured with EPDM seals but should avoid exposure to petroleum-based fluids as this could damage the seals. This Series 4 cartridge fits into a T-18A cavity and supports a capacity of up to 60 gpm (240 L/min) at a maximum operating pressure of 5000 psi (350 bar). Installation requires specific torque settings: valve torque between 350-375 lbf ft (474-508 Nm), locknut torque between 80-90 lbf in (9-10 Nm), and adjustment screw with an internal hex size of 5/32 inches (4 mm). The model weighs approximately 3 pounds (1.35 kg).