The SEALFAST 636 is a 4" NPT female to 2-1/2" NST outlet fitting, designed for secure and efficient connections in various plumbing and industrial applications. Made from high-quality materials, this fitting ensures durability and resistance to corrosion. Its precise threading allows for easy installation and compatibility with standard piping systems. This fitting meets industry standards, ensuring reliable performance in demanding environments. Ideal for use in water transfer, irrigation, and other fluid handling applications, the SEALFAST 636 is a dependable choice for professionals.