The Stream33 4" Plastic, Steel or Heavy Duty Cast Iron Transition Coupling is a highly resilient and versatile plumbing component designed for connecting 4" plastic, steel pipes or heavy duty cast iron pipes to 4" plastic, steel pipes or heavy duty cast iron pipes. This coupling is resistant to chemicals and UV rays, ensuring long-term durability even in challenging environments. It features stainless steel hose clamps that can handle an installation torque of up to 60 lbs and a 0.01" stainless steel shield for extra strength. With a maximum test pressure of 4.3 PSI (29.6 KPA), a minimum operating temperature of – 30° F, and a maximum operating temperature of 180° F, this coupling is suited for a wide range of plumbing applications, from residential to commercial applications, providing a secure and leak proof connection between different pipe materials.