Usage Tips:Features: This hydraulic flows control needle valves incorporates a versatile 1/2inch or 3/8inch port, designed to regulate flows efficiently in Single Direction, whilst also offering the capability to shut off flows when necessary. Equipped with a nitrile rubber O-rings seal, this needle valves ensuring a connection that significantly minimizes the risk of accidental leakage.The valves features a adjustment knob, crafted to facilitate precise setting of flows rates.This hydraulic needle valves showcases an opening pressure of 7.25PSI and a maximums flows rating of 40L/Min, ensuring adaptability across various hydraulic setups and applications.This needle valves is make of brass and zinc alloy to ensuring durability. Supports long-term use and reduces the need for frequent maintenance.Specifications: Component: Brass and Zinc AlloyDiameter: 1/2inch, 3/8inch(optional)Size: about 7.11x6.5cm/2.8x2.56inchPackage Includes: 1pc Hydraulic flows Control Needle valvesnote: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.