SUN HYDRAULICS
NCFBHBV

***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 NCFBHBV (NCFBHBV) is a needle valve with reverse flow check that serves as a fully adjustable orifice for regulating hydraulic flow. This component is designed to be infinitely adjustable from fully closed to the maximum orifice diameter, allowing precise control over fluid movement. It features an integral high-capacity check valve that provides unrestricted flow from port 2 to port 1, although it is not pressure compensated. The NCFBHBV model is part of the 2-port flow control cartridge series, which are both physically and functionally interchangeable across similar frame sizes. However, note that cartridge extension dimensions from the mounting surface may vary slightly. The valve's non-compensating nature means that the fixed orifice size regulates flow in proportion to the square root of the pressure differential between ports 1 and 2. A balanced adjustment mechanism ensures easy manipulation even under high pressures, while a sharp-edged orifice design minimizes variations due to changes in fluid viscosity. Additionally, Sun Hydraulics' floating style construction minimizes internal binding risks caused by excessive installation torque or cavity-cartridge machining variations. The NCFBHBV model fits into a Cavity T-16A/Series 3 and has a capacity of up to 30 gpm (120 L/min) with a maximum operating pressure of 5000 psi (350 bar). It exhibits minimal leakage at standard conditions, with a maximum valve leakage rate of just 10 drops/min (0.7 cc/min). The adjustment mechanism allows for up to 5\u00bd counterclockwise turns from fully closed to fully open positions. Installation requires specific torque settings: valve installation torque ranges from 150 to 160 lbf ft (203 to 217 Nm), while locknut torque ranges between 80 and 90 lbf in (9 to 10 Nm). The model weighs approximately 1.30 lb (0.60 kg) and uses a Viton seal kit with part number: 990-016-006 for maintenance purposes.