The Watts Regulator RK 909-VT 4-6 is a vacuum breaker designed to prevent backflow in plumbing systems. This model is constructed from high-quality materials, ensuring durability and resistance to corrosion. It features a compact design that allows for easy installation in tight spaces. The RK 909-VT operates effectively within a pressure range suitable for various applications, including irrigation and potable water systems. Its compliance with ANSI standards guarantees safety and reliability, making it an essential component for maintaining system integrity.