The WATTS 9DM2 Blackflow Preventer Duel Check Valve 3/4" is a reliable and efficient backflow prevention device designed for various commercial and industrial applications. This valve features a duel check design to ensure maximum protection against backflow, making it a valuable component for plumbing systems requiring high levels of reliability and safety. With its 3/4" size, this product is suitable for a wide range of installations and offers a durable and effective solution for preventing backflow in hydraulic, pneumatic, pump, and plumbing systems.