The STB-G3/8 is a non-pressure-compensated two-way flow restrictor. It allows for precise throttling of hydraulic fluid from Port A to B and Port B to A with equal resistance. The valve features a robust carbon steel body with a specialized anti-corrosion surface treatment (typically chrome or zinc plating). Its internal needle mechanism is made of hardened and ground steel to ensure a high-precision seal and minimal leakage even under high-pressure industrial conditions. The adjustment knob is equipped with a graduated scale for repeatable settings and a hex-socket locking screw to secure the flow rate during machine operation.