Traps
Traps General
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P3201.1 |
Trap materials allowed. Must be smooth interior and self-cleaning. |
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P3201.2 |
Must have liquid seal to prevent air bypass |
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P3201.2.1 |
Water supplied to trap for seal protection |
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P3201.3 |
Traps installed level and protected from freezing |
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P3201.5 |
Prohibited trap designs |
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P3201.6 |
Number of fixtures per trap allowed. |
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P3201.7 |
Size of fixture traps |
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Plumbing Fixture Minimum Trap Size- inches
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Bathtub |
1 ½ |
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Clothes washer standpipe |
2 |
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Dishwasher (on separate trap) |
1 ½ |
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Bidet |
1 ¼ |
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Kitchen sink (one or two traps, with or without dishwasher and food waste disposer) |
1 ½ |
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Laundry tub |
1 ½ |
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Shower -based on the total flow rate through showerheads and sprayers Flow rate: 5.7 gpm and less More than 5.7 gpm up to 12.3 gpm More than 12.3 gpm up to 25.8 gpm More than 25.8 gpm up to 55.6 gpm |
1 ¼ 2 3 4 |