SUN HYDRAULICS
NCGBHEV

***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 NCGBHEV (NCGBHEV) is a needle valve with a reverse-flow check, designed to provide fully adjustable flow regulation. It features an integral high-capacity check valve that allows for unrestricted flow from port 2 to port 1, although it is not pressure compensated. The valve is part of the 2-port flow control cartridge family and is interchangeable in terms of flow path and cavity size, though extension dimensions may vary. Its sharp-edged orifice design helps minimize flow variations due to viscosity changes, and its balanced adjustment mechanism ensures easy adjustments even under high pressures. The valve is suitable for systems with phosphate ester fluids when configured with EPDM seals, but exposure to petroleum-based fluids should be avoided as it can damage the seals. It incorporates Sun's floating style construction to reduce the risk of internal parts binding due to excessive installation torque or machining variations. With a capacity of 60 gpm (240 L/min) and a maximum operating pressure of 5000 psi (350 bar), this valve provides robust performance in demanding applications. The maximum leakage rate is minimal at 10 drops/min (0.7 cc/min) at 110 SUS (24 cSt). The model weighs approximately 3 lbs (1.35 kg) and requires an installation torque between 350 - 375 lbf ft (474 - 508 Nm). The adjustment screw has an internal hex size of 5/32 inches (4 mm), while the locknut hex size is 9/16 inches (15 mm), requiring a torque of 80 - 90 lbf in (9 - 10 Nm). This model provides precise control over hydraulic systems where variable flow rates are essential.