Parker 003381101 338 Series Brass Needle Valve, 1/4" NPTF, 250 psi

338 Series needle valves bi-directionally meter the flow of air through the valve. This series features a fine tapered needle providing precise flow of air in both directions. Numerical micrometer position markings are stamped on the perimeter of the adjustment knob which provide a visual indication of the setting. Once the desired flow is selected, a set screw can be tightened to maintain the setting. Stainless steel / brass internal components, nitrile seals. 2.28" Open height and 2.03" Closed height. 28 scfm at 100 PSIG inlet pressure with full pressure drop.