SUN HYDRAULICS
FCFBLBV

***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 FCFBLBV (FCFBLBV) is a fixed-orifice, pressure-compensated flow control valve with a reverse flow check designed for precise flow regulation in both meter-in and meter-out applications. This model is particularly effective in situations where there are significant pressure fluctuations. The valve features an integral high-capacity check valve that allows unrestricted flow from port 2 to port 1. Users must specify a flow rating, which is factory set within 10% of the requested setting, with a tunable control option offering a 20% variation from the nominal factory preset flow. Adjustments can be made by turning the adjustment screw clockwise to increase the flow. Physically and functionally interchangeable, all two-port flow control cartridges share the same cavity and flow path for a given frame size, though cartridge extension dimensions may vary. The sharp-edged orifice design reduces flow variations due to viscosity changes, while Sun's floating style construction minimizes potential binding of internal parts due to excessive installation torque or cavity/cartridge machining variations. The FCFBLBV model fits into cavity T-18A and belongs to Series 4, with a capacity of 50 gpm (200 L/min) and can operate at a maximum pressure of 5000 psi (350 bar). The valve requires an installation torque between 350 - 375 lbf ft (475 - 508 Nm) and features an adjustment screw internal hex size of 5/32 in. (4 mm). The locknut hex size is 9/16 in. (15 mm), with a locknut torque range of 80 - 90 lbf in. (9 - 10 Nm). It weighs approximately 1 lb (0.45 kg) and uses Viton seals for durability under various conditions.