SUN HYDRAULICS
NCGBYDV

***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 NCGBYDV (NCGBYDV) is a high-performance needle valve with a reverse flow check, designed to provide precise flow regulation in hydraulic systems. This valve features an adjustable orifice that allows for infinite control from fully closed to the maximum orifice diameter, making it ideal for applications requiring precise flow adjustments. It includes an integral high-capacity check valve that enables unrestricted flow from port 2 to port 1, although it is not pressure compensated. The NCGBYDV is part of Sun's interchangeable 2-port flow control cartridges, offering the same flow path and cavity compatibility across different frame sizes. The valve operates based on the square root of the pressure differential between ports 1 and 2, thanks to its non-compensating design. A balanced adjustment mechanism ensures easy operation even under high pressures, while the sharp-edged orifice design minimizes flow variations due to changes in fluid viscosity. It incorporates Sun\u2019s floating style construction, reducing the risk of internal binding caused by excessive installation torque or machining variations. With a cavity size of T-18A and a series 4 capacity of up to 60 gpm (240 L/min), this model can handle a maximum operating pressure of 5000 psi (350 bar). The NCGBYDV has minimal leakage rates and features various hex sizes for ease of installation and adjustment. It is compatible with systems using phosphate ester fluids when configured with EPDM seals but should not be exposed to petroleum-based fluids as they may damage the seals. Weighing approximately 3 pounds (1.35 kg), this needle valve offers robust performance for demanding hydraulic applications.