The 4" 250# Cast Iron Flanged Straight Pattern Non-Return Stop Check Valve is engineered to prevent backflow in piping systems. Constructed from durable cast iron, this valve is rated for 250# pressure, ensuring reliability in high-pressure applications. Its flanged design allows for easy installation and maintenance. This valve is compliant with ANSI standards, making it suitable for various industrial applications, including water treatment and chemical processing. The non-return feature ensures that fluid flows in one direction, enhancing system efficiency.