SUN HYDRAULICS
FLOW CONTROL
NCGBLAV

***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 NCGBLAV (NCGBLAV) is a versatile needle valve with reverse-flow check, designed for precise flow regulation in hydraulic systems. This component 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 management. The integral high-capacity check valve ensures unrestricted flow from port 2 to port 1, although it should be noted that this valve is not pressure compensated. The NCGBLAV is part of a series where all 2-port flow control cartridges are interchangeable, ensuring compatibility in terms of flow path and cavity size, though the extension dimensions may vary. This needle valve operates effectively in systems with varying pressure differentials due to its non-compensating nature, regulating flow proportionally to the square root of the pressure differential between ports 1 and 2. It features a balanced adjustment mechanism for easy operation even under high pressures, and a sharp-edged orifice design that minimizes variations due to viscosity changes. For systems using phosphate ester fluids, cartridges configured with EPDM seals should be utilized as they are not compatible with petroleum-based fluids. The NCGBLAV incorporates Sun's floating style construction to reduce internal part binding risks associated with installation torque and machining variations. It fits into a T-18A cavity and has a series 4 capacity of up to 60 gpm (240 L/min) at a maximum operating pressure of 5000 psi (350 bar). The valve's hex size is 1-5/8 inches (41.3 mm), requiring an installation torque between 350 and 375 lbf ft (474 - 508 Nm). The adjustment screw uses an internal hex size of 5/32 inches (4 mm), while the locknut requires a torque setting between 80 and 90 lbf in (9 -10 Nm). This model weighs approximately 3 pounds (1.35 kg) and comes with an optional Viton seal kit for enhanced durability.