Plug 3 / 4» De Dietrich 7633370

The plug 3/4" is a threaded fitting commonly used to seal unused ports or openings in boiler and burner systems. This plug helps prevent leaks and keeps debris out of the system when a connection point is not in use. Made to standard 3/4-inch sizing, it is compatible with many common heating components such as manifolds, pumps, and valves. Whether you are performing a system modification, replacing a missing plug, or sealing a test port, this simple part plays an important role in maintaining system pressure and cleanliness. Durable and easy to install, the 3/4" plug is a handy addition to any toolkit for boiler spare parts and burner maintenance.