Female NPT adapters are widely used fittings designed for connecting pipes with NPT (National Pipe Tapered) threads, a U.S. standard that has been in use for over 100 years. These tapered threads create a reliable seal by deforming the metal threads during tightening, making them ideal for fluid and gas transfer in single-assembly applications. NPT connections are not recommended for frequent assembly and disassembly, as over-tightening can damage the threads. A thread sealant is typically recommended to ensure a leak-free seal. Female NPT adapters are available in materials like iron and brass for low-pressure applications, and carbon steel or stainless steel for high-pressure systems, offering durability and secure connections across a wide range of industries.