- New
121-E is a Fairview Fittings brass hex-head pipe plug with a 3/4-inch male NPT connection. It is designed to close a compatible threaded pipe or fitting and provides a practical solution for plumbing and fluid-line applications. Fairview Fittings identifies brass threaded fittings for applications involving water, oil, natural gas and LP gas. The exact application should be verified according to the piping system and service requirements.