Black Iron Unions

Need to connect Black Iron piping with the ability for future separation? These black iron unions allow the user to connect two iron pipes in a non-permanent way. The ends have female threads, compatible with black iron piping of the same nominal size. Black iron fittings such as these unions are technically made of a malleable variety of steel, but they are most commonly referred to as "black iron" because their properties are similar to that of a strong iron. Browse our inventory of products below.

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Why Choose Black Iron for Union Fittings

These fittings are very helpful when you want to clean or modify a system, as they allow you to disconnect and reconnect lengths of pipe without destroying the seal tape or liquid sealant on the fitting's threads. Our black iron unions are also easy to install, with no welding or soldering required. This makes them a great option for DIY plumbing projects. Black iron has high temperature and pressure tolerances, making it ideal for gas and water supply lines. The black coloring protects these fittings from rust and corrosion, so they are able to go without being serviced for many years.

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