Brass Inline Easy Read Needle Valve, Female 3/4-14 NPT Ports, Up to 40.00 GPM & 2000.00 PSI

This brass needle valve is good for pneumatic systems and lower pressure hydraulic systems. Just be sure your system doesn't exceed the 2000 PSI pressure rating.

Pretty precise control, actually. The color-coded scale and numerical readout let you dial in a specific setting and come back to it later without losing your place. It adjusts within a fraction of a full turn, and each full turn corresponds to one color band, so repeatable settings are genuinely easy to hit. If you need to lock it down once you find the right spot, there's a set screw that holds the adjustment in place.