The 4" NPT X 2 1/2" NST X 2 1/2" NST fitting from Sealfast is designed for versatile connections in fluid transfer systems. This fitting features a 4" NPT thread for secure attachment to pipes, along with dual 2 1/2" NST threads for compatibility with various hoses and fittings. Constructed from durable materials, it ensures a leak-free connection under pressure. This product meets industry standards for safety and performance, making it a reliable choice for professionals in plumbing and industrial applications.