Tube plugs are a necessary component for heat exchangers. It is mainly to repair shell and tube types of heat exchangers. When done right, this can be a tried-and-tested way to fix a heat exchanger. However, when it is not plugged correctly, your heat exchanger can run into problems. In this article, we will introduce the different types of tube plugs required for heat exchangers, steps to take to plug in heat exchangers, and why it is very important that your tube plugs be installed correctly.
Types of Heat Exchanger Plugging Methods
Mechanical Plug
A mechanical plug is created to enlarge within the tube itself, which then creates a seal. This seal is internal, which allows the seal to be utilized in situations with high pressure. The benefit of these types of plug methods is that they can be done conveniently without any hassle. It also does not damage the tube.
Tapered Plug
A tapered plug is inserted by plugging the end into the tube with a hammer. The metal on the plug has to come in contact with the metal piece in the tube. Having done this, a seal is created. However, one word of caution is that if you do not do this properly, you may damage the tube sheet. We source tapered tube plugs that are of high quality, durable and affordable.
Ring and Pin
The ring and pin plug has a ring that is contained within the tube, and a tapered pin that is malleted through the ring. The secondary ring then creates a tighter seal.
Steps to Plug Tubes in Heat Exchangers
The first step is to locate the leaking tube. To do so, search for indications of corrosion or wear and tear. You should also use a tube leak test gun.
The next step is to clean the tube to ensure that there is no debris on the tube where the plug is installed.
Thirdly, you have to plug in the tube of course. As mentioned previously, there are many types of plug-in methods. The most common way is to use the mechanical plug since it is hassle free.
Then, remember to search for leaks. Doing so requires a pressure test.
Consequences of Improper Installation of Plugs
If you do not install your plugs properly, a new leak can form. For instance, if you use too much force to insert the plug, you might damage the tube, and you may even create a new crevice in the heat exchanger.
In order to ensure that you have the right high pressure and low pressure plugs that can effectively seal leaks, we source the best plugs and provide handy and informative instruction manuals that guide you to install your plugs in a safe manner. If you have any further questions about our specialized performance and maintenance equipment, contact us today!
