Copper pipe comes in four different kinds, and manufacturers provide each one with letter codes that correspond to the corresponding type. In general, types K, L, and M are used for residential plumbing systems, and type DWV is used for drain-waste-vent pipes. These are the thinnest types of copper pipes. However, the main difference between them is the amount of copper they can carry.
Copper pipe Type L is the most common kind, and can be found in both outside and interior plumbing systems. Copper pipe Type L comes in two different types: hard and soft. Hard copper Type L is used for replacing interior plumbing systems. Hard copper Type L is generally more durable than soft copper, and is preferred for most plumbing projects.
Type K copper pipe is the heaviest and densest type. It has a wall thickness of 0.65 inches, and is used for service lines in underground areas. While this is the most durable type of copper pipe, it is also the most expensive and difficult to work with. It also does not have the greatest flexibility. If you’re planning to install it underground, it is best to buy Type K copper pipes.
Rigid copper is commonly used in water lines. Rigid copper is typically joined with crimp, solder, or roll grooved connections. Rigid copper is not flexible, and needs elbow fittings in order to bend to fit around obstacles. Flexible copper is more flexible and is used for flexible plumbing. Copper is available in many different lengths, sizes, and tempers. When you need Copper Pipe, head to a site like watkinspowis.co.uk/products/copper-pipe-fittings-and-press-systems/
Type L copper pipe is thinner than Type M and is suitable for interior water supply systems, hot water heating, and fire protection systems. Type M copper pipe can be used in interior plumbing drains and is available in flexible and rigid tubing. It is generally used for above-ground installations, but it is not allowed for plumbing work in underground locations. If you’re considering buying copper pipes, you’ll want to read the plumbing codes in your area.
DWV pipe is approved only for drain and vent lines, and is the only copper pipe that is not used for water systems. DWV pipe is available in bigger diameters than other copper pipes and has yellow markings. This type has thinner walls than the other two types and can withstand 15 psi. A few different types of copper pipes are available, but all are compatible with most modern plumbing systems.
Rigid and soft copper pipes have their advantages and disadvantages. Rigid copper pipes are cheaper than soft copper pipes, but they are not as flexible as soft copper.