This is a high-quality ASV Anti-Siphon Valve with Union and Manual Control, made by SUPERIOR. It is designed to regulate the flow of water in your irrigation system without allowing it to flow back into the valve, ensuring efficient and effective water usage. This valve is made of durable brass material and has a 3/4" model size. It is compatible with various irrigation systems and is easy to install, making it a great choice for any lawn sprinkler or sprinkler head.