In this video, This Old House plumbing and heating expert Richard Trethewey explains the various parts commonly used in a home plumbing system.
1. Copper pipe is available in rigid lengths or in flexible coils.
2. Type M is thin-wall copper pipe; Type L is thick-wall pipe.
3. In some areas, Type M pipe isn't allowed for delivering potable water, but it can be used for hot-water heating systems.
4. Copper pipe is commonly available in diameters ranging from ½ inch to 2 inches.
5. Lengths of copper pipe are joined together with fittings, which come in many sizes and shapes, including: 90° elbows, 45° elbows, couplings, reducing fittings, and T-fittings.
6. Fittings can be soldered or threaded onto the pipe ends.
7. Soft-drawn copper coils are flexible and can make bends without fittings.