The SEALFAST 636-1 is a 4" flanged inlet to 2-1/2" NST outlet fitting, engineered for secure connections in plumbing and industrial applications. Constructed from durable materials, this fitting offers excellent resistance to corrosion and wear. Its flanged design allows for easy installation and compatibility with standard piping systems, ensuring a tight seal. This fitting meets industry standards, making it suitable for various fluid handling applications. Ideal for water transfer and irrigation systems, the SEALFAST 636-1 is a reliable choice for professionals seeking quality and performance.