A female hex coupling is a precision-engineered pipe fitting designed to connect two female NPT-threaded ports of the same size. It features female NPT threads on both ends and a hexagonal body for easy tightening or removal with a wrench, providing a secure and leak-resistant connection in piping or instrumentation systems.
These couplings are commonly used in hydraulic, pneumatic, instrumentation, and fluid systems across industries such as oil and gas, chemical processing, manufacturing, and power generation. When installed with thread sealant or PTFE tape, the NPT threads ensure a reliable connection suitable for high-pressure applications.

