Unique Bargains Plastic Ozone Resistance Durable Non-Return Check Valve 1 Pcs 1/2" 2 Pcs

One-way air check valves are suitable for a wide range of environments and occasions, whether it is air compressors and gas pipelines, aquariums, fish farming, and other residential, commercial, and industrial areas. It is an excellent fitting for air piping connections. Check valves are made of high-strength plastic for stability and reliability. The nickel-plated surface is so durable and weather-resistant for a long service life. One-way check valves are used to prevent the medium from flowing backward in the pipeline, preventing the backflow of water or air from causing accidents. It can be used to transport gas and liquid at constant pressure. Can be installed vertically or horizontally. These one-way air check valves are easy to install. The check valves are marked with arrows indicating the direction of fluid flow. Simply connect the piping in the direction of the arrow.