fra0405
plumbing04.htm Essentials of Plumbing

Unit I: Legends,

INSTALLING P-TRAPS

A lavatory/sink waste connection from the tailpiece to the rough-in plumbing drain outlet is made by using a P-trap. The P-trap is formed using the following parts: U-shaped trap, drainpipe with one curved end, and three slip nuts and washers. P-traps come in two types and sizes: fixed or swiveled and 1 inches or 1 inches.

Installing a P-trap. Use the following steps to connect the lavatory/sink P-trap (see Figure 11):

FIGURE 11.  INSTALLING A P-TRAP
FIGURE 11. INSTALLING A P-TRAP

 

  1. Slide escutcheon, slip nut, and rubber washer over the straight end of the drainpipe.
  2. Slide straight end of drainpipe into rough-in plumbing.
  3. Fasten slip nut hand-tight onto rough-in plumbing.
  4. Slide slip nuts and then rubber washers over curved end of drainpipe and tailpiece.
  5. Slide trap's lowest end onto drainpipe and highest end onto tailpiece.
  6. Fasten slip nuts hand-tight onto trap.
  7. Line up the connections, and tighten all slip nuts.
  8. Slide escutcheon against the wall.

Most of the content of this course is provided courtesy of US Army Engineer School, Fort Leonard Wood, Missouri

Copyright David L Heiserman
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