Aluminium Alloy Fuel Non Return Check Valve One Way Petrol Diesel for Car Automobile Helicopters Ships Motorcycles. Features: suitable for all sizes of one way valves, non return valves, check valves, oil supply valves, oil pumps, and aluminum joints. Medium used: Diesel oil, gasoline, water, etc. Scope of application: for Peugeot, for Renault, Vessel, Helicopters, Ships, Motorcycles and other fuel systems. Advantages: Diesel resistant, gasoline resistant and aging resistant. Specifications: Size: 52*22mm/2.05*0.87", Material: external: high quality aluminum alloy, internal: high quality NBR rubber. Opening pressure: 0.2 bar, Working pressure range: 0.2-6 bar, Working temperature range: -30 ℃-130 ℃