The 4" LF406-NRS-RW from Watts Regulator Company is a high-performance regulator designed for optimal pressure control in various applications. This model features a durable construction that ensures longevity and reliability. With a maximum pressure rating suitable for demanding environments, it is ideal for both residential and commercial systems. The 4" size allows for significant flow capacity, making it perfect for larger installations. This regulator complies with industry standards, ensuring safe and effective operation in a variety of applications.