beler One Way Inline Check Valves for Fuel Diesel Gas Liquid Water 4mm

Specifications Condition: 100% new Color: White Material: Plastic Hose size: 4mm Opening pressure: >0.015MPA Compatible: Suitable for water, petrol, diesel, oils and other fluids Item included:1 x one way check valve Please note: Please allow 3-5 mm error due to manual measurement.  Description MM Size: 4MM Inch Size: 1/8 " Hose Size: 4mm Overall Length: 52mm Cylinder Diameter: 20MM Feature: 1) Good quality material, safe and nontoxic. 2) Arrow marked on valve, showing fluid flow direction, Prevents fuel from returning back to the tank and keeps it in the line. 3) Stable characteristics, high reliability. 4) Easy installation and replacement.