Type M differences and the less common DMV tube

Our team have a lot of experience and provide the very best rotary tube swaging solutions. The process creates regular forms or circular concentric minimisations. This happens on one or both sides of the tubing. As a result, the inside changes while the exterior remains the same.

Usually, copper tubing is most common within the construction industry. We use the tubes to provide water and as a refrigerant line within HVAC systems. Yet, there are many variants of this type of tube. Each one has its own purpose depending on how you categorise them and where you intend to install them. The three principal types are M, K, and L. Type M differs from its counterparts however, and we’re going to explain why.

How is it different?

Type M copper tubing possesses a thinner wall than L and K. One utilises this kind of tube alongside flare fittings. In addition, you can obtain it in hard or soft tubing. Typical applications include vacuum systems and domestic water services.

One of the main reasons why type M is popular is because of how it dispenses water within a house. Pricing is another contributing factor. Be sure to examine your building code on restrictions and applicability when working with these tubes though.

There is another less commonly used type of copper tube, that of DMV. Its primary use is on drainage networks. You can find it in the majority of old houses. It is also found in vent plumbing fixtures. If you come across this type of tubing, it would be best to use it exclusively for above ground projects.

At Multiform Tubes, we use our tube swaging technique on all kinds of tubes in addition to copper variations. For example, a customer might require stainless steel or hydraulic tubes for their particular project. If there are specifics you need to discuss with us, please get in touch.