Proflex 1-1/2" x 1-1/2" PVC Shielded Transition Coupling provides a reliable connection between cast-iron pipe and plastic, steel, or extra-heavy cast iron pipe without the need for bushings. It features an internal pipe stop that ensures proper installation while reducing noise and vibration for a quieter operation. The outer shear ring and clamp assemblies are designed to meet the standards of ASTMA A167-91, ensuring durability and secure fitting. This coupling is i for applications requiring a strong, noise-reducing transition between different pipe materials.