SUN HYDRAULICS
FCDBNBN

***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 FCDBNBN (FCDBNBN) is a fixed orifice, pressure-compensated flow control valve with a reverse flow check feature, designed for precise flow regulation in applications where wide pressure fluctuations occur. This model incorporates an integral high-capacity check valve that allows unrestricted flow from port 2 to port 1. The user specifies the flow setting, which is factory-set and falls within 10% of the requested specification. Notably, all two-port flow control cartridges are interchangeable in terms of flow path and cavity for a given frame size, although cartridge extension dimensions may vary. The sharp-edged orifice design minimizes variations due to viscosity changes, and the tunable control option allows a 25% variation from the nominal factory preset flow by adjusting clockwise to increase. This corrosion-resistant cartridge valve is suitable for use in corrosive environments and can be configured with external stainless steel components (model code suffix AP) or zinc-nickel plated components (suffix LH). It features Sun's floating style construction to minimize internal parts binding due to excessive installation torque or machining variations. The FCDBNBN fits into a T5A cavity, operates at a maximum pressure of 5000 psi (350 bar), and has a capacity of 12 gpm (45 L/min). Its valve hex size is 1-1/8 inches (28.6 mm), with an installation torque of 45-50 lbf ft (61-68 Nm). The adjustment screw internal hex size is 5/32 inches (4 mm), while the locknut hex size is 9/16 inches (15 mm) with a locknut torque of 80-90 lbf in (9-10 Nm). The model weighs approximately .50 lb (.25 kg) and uses Viton seal kits for durability.