DIY Guide All You Needs To Know : Are Dielectric Unions Necessary

You don’t get to know the importance of a tool until the need for it arises. Just as some tools are essential, some you can do without them. If you keep asking yourself that are dielectric unions necessary for plumbing work, this page will explain in detail all that you need to know.

A Dielectric Unions have – Threaded Adapter, Isolation & Sealing Gasket, Female Threaded Insert, Isolation Sleeve, Union Nut.

Not to assume you know what dielectric union is, we will quickly give a brief description of the fitting. It is a plumbing adapter or fitting, as it’s been called by some plumbers. It is used in joining two metals together in the quest to reduce the chance of corrosion or rust.

Whenever two metals come in contact with exposure to water of different quality, the tendency to experience rust or corrosion is high, which is the reason for the use of dielectric unions. So, if you are asking if they are necessary, it simply means you are asking if it is good to prevent corrosion.

So, on that note, dielectric unions are not only necessary but essential and indispensable whenever you are joining two metals together.


When Are Dielectric Fittings Required?


Whenever you are working on a residential or commercial plumbing task, you need to carefully consider the use of dielectric fitting. The fitting helps in ensuring that you do the right thing with joining two metals together. If you ever join two metals without a dielectric union or an alternative option, you are likely to experience lots of issues with your plumbing work.

So, whenever you have plumbing work to do, and it will require you to join one metal to another one, you need to consider the use of a dielectric union. The truth with it is that it helps to keep your mind at rest since it has greater power to leaking doesn’t take place and also keep the two metals in good condition for so long.


Dielectric Union Installation


The installation of the dielectric union is effortless and straight forward.

If you are set to install the fitting on two dissimilar metal pipes, you should get access to a sealing tape and wrap it over the threads of the steel pipe. Now you can install the threaded end of the dielectric union body on the steel pipe and turn the union clockwise using a pipe wrench to tighten it.

After you must have tightened it, you need to slide the union nut over the end of the copper pipe with the open threaded end facing out, and you need to also slide the orange color plastic insulator over the copper pipe.

Thereafter, you should install the copper solder adapter onto the copper pipe and weld the solder adapter to the copper pipe with the use of a propane torch. While doing this, you should ensure you keep the insulator far away to avoid any form of melting.

The final step for you is to slide the rubber gasket between the union nut and the union body, and then you can go on to assemble and check to ensure a water-tight connection.


Dielectric Union Leaking


Is it possible for the dielectric union to leak? Yes, it is possible for the dielectric union to leak. It can get to leak if it gets weak or it gets exposed to poor quality water. Leaking will occur as a result of corrosion and rust, and that could be a sign that the fitting is old and might need a replacement.

Where are dielectric union necessary? If you are a plumber by profession or you love the DIY work, and you’ve got task to do with joining two metals, you need a dielectric union. Also, apart from joining two metals together, it helps to keep your plumbing fitting in good condition for a longer period even in the presence of less quality water.

To prevent leaking most importantly, you need to use a dielectric union in your plumbing work if you have to join two metals together.

Final Words

Are dielectric unions necessary? The answer to that is yes, and there is no controversy over that because you have got no better way of joining two metals together without a dielectric union. The best way to eliminate or reduce the chance of corrosion and rust is through the use of the fitting.