The JCM Industries DI Transition Coupling with epoxy coating and E-Coat bolts is designed for connecting ductile iron pipes with a size range of 4" (4.80 - 5.10) to 4". This coupling is engineered for durability and corrosion resistance, making it ideal for water and wastewater systems. The epoxy coating enhances the product's lifespan, while the E-Coat bolts provide additional protection against environmental factors. This product complies with industry standards, ensuring a secure and leak-free connection. Ideal for contractors, it simplifies installation and enhances the integrity of piping systems.