6 8 10 12 14 16mm One-way Non-return Check Valve Fuel Water Gas Air Vacuum Aluminum Alloy Petrol Diesel Water Fuel Line Way

Good luck with your favorite purchasesHign-concerned Chemical : None Placement on Vehicle : Fuel supply system Country/Region of Manufacture : CHINA Special Features : Control airflow flow Origin : Mainland China Material : Aluminum Alloy Applications : For Car Vacuum Hose Oil Water Pumps Motorcycle Caravan Ship Function : prevents fuel from returning back to the tank and keeps it in the line.