4PCS 6mm 8mm 10mm 12mm Diameter Aluminum Fuel Non Return Check Valve One Way Petrol Diesel Fuel Oil Fit for Carburetors Silver

Feature:1) The life of Aluminum head for using is longer than plastic heads2) Arrow marked on valve, showing fluid flow direction, Prevents fuel from returning back to the tank and keeps it in the line. In this way, this product can perfectly solve the problem that your vehicle is hard or slow to start because the fuel is running back through the lines.3) Also great for water pressure pumps & galley pumps which are not self-priming4) Professional grade non-return valve - Ideal for marine, automotive, caravans/RV, and agriculture.5) Stable characteristics, high reliability.6) Easy installation and replacement. Specification：Size: 6mm (1/4"), 8mm (5/16"), 10mm (3/8"), 12mm (1/2").Material: Aluminu+NBR Rubber .Opening pressure：0.2barWorking pressure:0.2-6barOperating temperature:-30 ℃-130 ℃ Function: Prevents fuel from siphoning back to the tank and holds it in the line.Fitment: Fits for Carburettor and low pressure fuel systems.For Use With Petrol, Diesel, Bio / Vegetable oil, Paraffin / Kerosene oil, etc.