DYWISHKEY 8mm 516 Fuel Non Return One Way Check Valve Petrol Diesel Aluminium Alloy

√ Material: Aluminum Alloy, √ Suits: 8mm (5/16") ID hose, √ Easy installation and replacement, √ Professional grade non-return valve - Ideal for marine, automotive, caravans/RV, and agriculture, √ Arrow marked on valve, showing fluid flow direction, Prevents fuel from returning back to the tank and keeps it in the line