Traps

Traps

SECTION P3201

Traps General

P3201.1

Trap materials allowed. Must be smooth interior and self-cleaning.

P3201.2

Must have liquid seal to prevent air bypass

P3201.2.1

Water supplied to trap for seal protection

P3201.3

Traps installed level and protected from freezing

P3201.5

Prohibited trap designs

P3201.6

Number of fixtures per trap allowed.

P3201.7

Size of fixture traps

 

Plumbing Fixture                                                                              Minimum Trap Size- inches

Bathtub

1 ½

Clothes washer standpipe

2

Dishwasher (on separate trap)

1 ½

Bidet

1 ¼

Kitchen sink (one or two traps, with or

without dishwasher and food waste disposer)

1 ½

Laundry tub

1 ½

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