The Watts Regulator 1 1/4 D4000B is a heavy-duty pressure regulator designed for high-flow applications. Constructed from premium materials, it features a brass body and is rated for a maximum pressure of 125 PSI. This model includes a 1 1/4" NPT connection, ensuring compatibility with various piping systems. Ideal for both commercial and industrial use, it meets ANSI standards for safety and performance. The D4000B is engineered for easy installation and maintenance, making it a reliable choice for pressure control in demanding environments.