SUN HYDRAULICS
NFDCKBV

***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 NFDCKBV (NFDCKBV) is a versatile needle valve designed for precise flow regulation in hydraulic systems. This fully adjustable orifice allows for infinite adjustments from a completely closed position to the maximum orifice diameter, making it ideal for applications requiring meticulous flow control or shutoff capabilities. Notably, these valves are not pressure compensated, meaning the flow regulation is dependent on the pressure differential across ports 1 and 2, with flow varying proportionally to the square root of this pressure difference. Engineered with a balanced adjustment mechanism, the NFDCKBV ensures ease of adjustment even under high-pressure conditions. The valve's sharp-edged orifice design minimizes flow variations caused by changes in fluid viscosity, enhancing its reliability across different operating environments. Additionally, this valve supports bidirectional flow paths, though the preferred direction is from port 1 to port 2 to maintain interchangeability with other flow control devices. The NFDCKBV model features no leakage when fully closed and comes equipped with EPDM seals suitable for systems using phosphate ester fluids. It's important to note that exposure to petroleum-based fluids can damage these seals. The cartridge has a capacity of 12 gpm (45 L/min) and can withstand a maximum operating pressure of 5000 psi (350 bar). Installation requires specific torque settings: valve installation torque is between 45-50 lbf ft (61-68 Nm), while locknut torque ranges from 80-90 lbf in (9-10 Nm). The model has a weight of .60 lb (.30 kg) and uses Viton seal kits for maintenance.