Parker Hannifin N400B Brass Hydraulic Needle Valve

The Parker Hannifin N400B Brass Hydraulic Needle Valve is a compact inline valve designed for precise throttling in hydraulic circuits, with a brass body rated to 2000 PSI and capable of 5.0 GPM. As a needle valve, it provides fine flow control essential for calibration, testing, and control loops in industrial hydraulics. The N400B is built for inline installation between components where steady, repeatable adjustment of hydraulic flow is required, making it suitable for instrumentation benches, hydraulic test rigs, and machine tool hydraulics. Its brass construction offers corrosion resistance in common hydraulic fluids and compatibility with standard hydraulic piping practices. This model from Parker Hannifin enables operators to dial in precise flow rates at pressures up to 2000 PSI and flows up to 5.0 GPM while maintaining simple, reliable operation.