SUN HYDRAULICS
NCFBLAV

***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 NCFBLAV (NCFBLAV) is a needle valve with a reverse flow check, designed to serve as an adjustable orifice for regulating hydraulic flow. This valve allows for infinite adjustment from fully closed to the maximum orifice diameter, providing flexibility in flow control applications. It features an integral high-capacity check valve that permits unrestricted flow from port 2 to port 1, although it is not pressure compensated. The NCFBLAV is compatible with all 2-port flow control cartridges of the same series and cavity size, ensuring interchangeability. It utilizes a balanced adjustment mechanism for ease of use even under high-pressure conditions, and its sharp-edged orifice design minimizes flow variations caused by changes in fluid viscosity. The floating style construction reduces the risk of internal binding due to excessive installation torque or machining variations. This model operates within a capacity of 30 gpm (120 L/min) and can withstand a maximum operating pressure of 5000 psi (350 bar). It exhibits minimal leakage at 110 SUS (24 cSt), with a maximum allowed leakage rate of 10 drops/min (0.7 cc/min). The adjustment range spans up to 5.5 counterclockwise turns from fully closed to fully open. Installation requires a torque specification ranging from 150 to 160 lbf ft (203 to 217 Nm), while adjustments are made using an internal hex size of 5/32 inches (4 mm). The locknut requires a torque between 80 and 90 lbf in (9 to 10 Nm). Weighing approximately 1.30 lb (0.60 kg), this model also includes Viton seal kits for enhanced durability and performance under various conditions.