The NIBCO 9025900PCI is a professional-grade 1-1/2 inch press-fit adapter designed to connect copper press tubing to a threaded female NPT (FIPT) port. Constructed from durable C12200 copper with an integrated EPDM O-ring, this adapter creates a permanent, leak-free seal for potable water and climate control systems. Compatible with NIBCO-branded press tools, it simplifies installations by eliminating the need for soldering, threading, or gluing. This fitting is an essential component for plumbers and HVAC technicians working on commercial or residential projects that require reliable, high-pressure connections up to 200 PSI.