This needle valves is make of Stainless Steel to ensuring durability Supports long-term use and reduces the need for frequent maintenance 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 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 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 knob, crafted to facilitate precise setting of flows rates, Manufacturer: FHGSPQWM