The BON.ADAP 1-3/8 DIA-18 TPI with Stem Adapter is a versatile component designed for various plumbing and HVAC applications. This adapter features a 1-3/8 inch diameter and 18 threads per inch (TPI), ensuring a secure connection. Made from durable materials, it is built to withstand high pressure and temperature variations. The stem adapter allows for easy integration into existing systems, making it an ideal choice for both new installations and repairs. Its robust construction meets industry standards, ensuring reliability and longevity in demanding environments.