PLASTIC PIPE FOR DRAINS & VENTS

Plastic pipe for drains and vents is very common in modern plumbing. Polyvinyl Chloride Plastic Pipe (PVC) is probably used more often than any other type of drainage or vent pipe (Fig. 11.26). This type of pipe is strong and resistive to a variety of acids and bases. PVC pipe can be used with wa­ter, gas, and drainage systems, but it is not rated for use with hot water. I’ve found this type of pipe to be sensitive to dirt and water when joints are being

Подпись: Drawn (hard copper) (feet) Annealed (soft copper) (feet) Type К Tube Straight Lengths: Straight Lengths: Up to 8-in. diameter 20 Up to 8-in. diameter 20 10-in. diameter 18 10-in. diameter 18 112-in. diameter 12 12-in. diameter 12 Coils: Up to 1-in. diameter 60 lVi-in. diameter 60 100 2-in. diameter 40 45 Type L Tube Straight Lengths: Straight Lengths: Up to 10-in. diameter 20 Up to 10-in. diameter 20 12-in. diameter 18 12-in. diameter 18 Coils: Up to 1-in. diameter 60 100 lVi- and 1 Win. diameter 60 100 2-in. diameter 40 45 DWV Tube Straight Lengths: Not available All diameters 20 Type M Tube Straight Lengths: Not available All diameters 20

FIGURE 11.22 ■ Available lengths of copper plumbing tube. [Courtesy of McGraw-Hill)

Подпись: Hard copper is also known as drawn copper, while soft copper tubing is known as annealed copper.

FIGURE 11.23 ■ Tech tips.

made. The areas being joined should be dry, clean, and primed prior to sol­vent welding. Also, PVC becomes brittle in cold weather and should not be dropped on hard surfaces.

Acrylonitrile Butadiene Styrene (ABS) pipe is the drainage pipe of pref­erence for me. However, I do use more PVC than ABS at this point in my

Подпись: Size (inches) Service weight per linear foot (pounds) Extra heavy size (inches) Per linear foot (pounds) 2 4 2 5 3 6 3 9 4 9 4 12 5 12 5 15 6 15 6 19 7 20 8 30 8 25 10 43 12 54 15 75

FIGURE 11.24 ■ Weight of cast-iron soil and pipe. (Courtesy of McGraw-Hill)

Подпись:career. When plastic drainage and vent piping became popular, I cut my teeth on ABS pipe. But, PVC pipe is less expensive in most regions and enjoys a less-destruc­tive rating in the case of fires, so most of the industry, that I know of, has moved to PVC. I like ABS because of its durability and its ease of working with. This pipe is so strong that I’ve seen loaded dump trucks run over a section of ABS on a proj­ect and never crush the pipe!