The 4" LFM500N-OSY-G from Watts Regulator Company is a reliable and durable valve designed for optimal flow control in various applications. This model features a 4" diameter and is rated for 150 PSI, making it suitable for both residential and commercial use. The robust construction ensures compliance with industry standards, providing long-lasting performance. The outside screw and yoke (OSY) design allows for easy operation and maintenance, making it ideal for water and gas applications. This valve is engineered to provide consistent flow rates, enhancing system efficiency and reliability.