The JCM Industries DI Transition Coupling is designed for seamless connections between ductile iron pipes with a size range of 4" (4.80 - 5.10) to 4.22". This coupling is engineered to provide a reliable and durable solution for various piping applications. Constructed from high-quality materials, it ensures long-lasting performance and compliance with industry standards. The coupling features a robust design that accommodates different pipe types, making it versatile for use in water and wastewater systems. Ideal for contractors and engineers, this product simplifies installation and enhances system integrity.