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| Drain traps
– those U-shape pieces of drain pipe underneath your
sink – do a lot of dirty work. Occasionally, they
leak, become corroded, or get plugged with years of
accumulated soap and grease. When that happens,
replace an old trap with nice new ones. Traps are made
from ABS (black), PVC (white), or brass (either chrome plated or natural colored.) Replace your drain trap
with the same type of trap you remove. Traps come in 1 1/4
inch or 1 1/2 inch inside diameter sizes. Be sure you get
the right size replacement. |
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 Completely
remove the old drain trap assembly. Don't try to salvage
any parts -- it's not worth the aggravation. Replace them
all with new ones. |
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 Put a
tailpiece washer into the flared end of the tailpiece,
then attach the tailpiece by screwing the slip nut onto
the sink strainer. If necessary, you can cut the tailpiece
to fit with a hacksaw. |
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 If you're
working on a sink with two basins, use a continuous
waste-T-fitting to join the tailpieces. Attach the fitting
with slip washers and nuts. Make sure the beveled sides of
washers face the threaded portion of the pipes. Putting a
little pipe lubricant on the slip washer will ease
installation and ensure a tight fit. |
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 Attach the
trap arm to the drain stub-out, using a slip nut and
washer. Remember to keep the beveled side of the washer
facing the threaded drain stub-out. If necessary, the trap
arm can be cut to fit with a hacksaw. |
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 Attach the
trap bend to the trap arm, using slip nuts and washers.
The beveled side of the washers should face the trap bend.
Tighten all the nuts with a pair of slip joint pliers.
Never use teflon tape on white plastic pipe threads and
fittings. |
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RELATED PROJECTS
Clearing Sink Drains
with a Plunger
Fixing Leaky Sink
Strainers
Clearing a Fixture Drain
Line
Unclogging a Sink Drain
Trap
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