Copper pipe is common in domestic plumbing applications as it is naturally corrosion-resistant, meets fire safety standards and offers excellent levels of thermal conductivity.
What are the different types of copper pipe?
There are three main types of copper pipe. These are categorised as Type K, Type L and Type M.
Type K is the thickest, typically used in demanding and industrial environments where its pressure-resistance prevents warping and cracking.
Type L is a mid-grade pipe used in residential and commercial properties. It is designed for moderate water pressure and can be cut to size and joined by press-fit connectors designed for copper pipe, allowing it to fit into awkward shaped spaces.
Type M copper pipe is the cheapest pipe, designed for low-pressure environments such as the transfer of cold water. It is a slightly less durable alternative to Type L pipe but ideal where cost is a priority.
Which type of copper pipe is best?
Which type of copper pipe is best depends upon your individual circumstances and requirements. If you are installing nonflammable medical gas piping systems then you must abide by industrial standard ASTM B 819 which specifies the use of Type K or Type L pipework.
If you are installing a new bathroom in a residential property to live in, you would be best opting for Type L pipework to enjoy a maintenance-free, long lifespan. However, if the property is to be sold and longevity is not a deciding factor, you will maximise your return on investment by choosing Type M pipework.