The SEALFAST D400AL90 is a 4" Coupler x Female NPT 90-degree fitting, designed for secure connections in piping systems. This coupler is made from high-quality materials, ensuring durability and resistance to corrosion. Its 90-degree design allows for efficient flow direction changes, making it ideal for various plumbing and industrial applications. The precise threading ensures a tight fit, minimizing leaks and enhancing performance. This coupler meets industry standards for safety and reliability, making it a trusted choice for professionals.