SUN HYDRAULICS
NCGBLEN

***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 NCGBLEN (NCGBLEN) is a versatile needle valve with a reverse flow check, designed for precise flow regulation. This component features an adjustable orifice that can be set from fully closed to the maximum diameter, allowing for tailored flow control. A key feature is its high-capacity check valve, which ensures unrestricted flow from port 2 to port 1. It's important to note that this valve is not pressure compensated, meaning the fixed orifice size regulates flow in proportion to the square root of the pressure differential across ports 1 and 2. The valve's balanced adjustment mechanism facilitates easy adjustments even under high pressure conditions, while its sharp-edged orifice design minimizes variations due to viscosity changes. This needle valve is compatible with systems using phosphate ester fluids when equipped with EPDM seals but should not be exposed to petroleum-based fluids as they may cause seal damage. It incorporates Sun's floating style construction, reducing the risk of internal parts binding due to excessive installation torque or machining variations. The NCGBLEN model fits into a T-18A cavity and can handle a capacity of up to 60 gpm (240 L/min) with a maximum operating pressure of 5000 psi (350 bar). It boasts minimal leakage at high viscosity levels and allows for fine adjustments through its internal hex screw mechanism. Installation requires specific torques: the valve itself needs between 350 - 375 lbf ft (474 - 508 Nm), while the locknut requires between 80 - 90 lbf in (9 - 10 Nm). This model weighs approximately 3 pounds (1.35 kg) and uses Viton seals for optimal performance in suitable environments.