DGBRSM 2PCS 1/2 Inch Female to 1/2 Inch Male Threaded One Way Brass Check Valve with Gasket for Water Towers Water Heaters and Toilet Anti Backflow Valves

["High-Quality Materials: Made of premium brass, this product offers excellent corrosion resistance, is rust-resistant, and is reliable and durable for long-term use.","One-Way Non-Return Function: This 1/2-inch brass check valve prevents backflow of media in pipelines. It is suitable for conveying gases and liquids under constant pressure conditions, ensuring stable operation.","Versatile Installation: Can be installed vertically or horizontally, flexibly adapting to different pipe layouts for convenient installation and use.","Versatile Applications: Suitable for scenarios such as water towers, water heaters, and toilets, ensuring efficient operation and stable water supply.","Thread Specifications and Notes: 1/2-inch male thread to 1/2-inch female thread (unidirectional flow); verify the direction before purchase and installation, as reverse installation will obstruct water flow."]