// CODE SNIPPET
604.5 Size of Fixture Supply
JUMP TO FULL CODE CHAPTER
The minimum size of a fixture supply pipe shall be as shown in Table 604.5. The fixture supply pipe shall terminate not more than 30 inches (762 mm) from the point of connection to the fixture. A reduced-size flexible water connector installed between the supply pipe and the fixture shall be of an approved type. The supply pipe shall extend to the floor or wall adjacent to the fixture. The minimum size of individual distribution lines utilized in gridded or parallel water distribution systems shall be as shown in Table 604.5.
MINIMUM SIZES OF FIXTURE WATER SUPPLY PIPES
FIXTURE | MINIMUM PIPE SIZE (inch) |
Bathtubsa (60" × 32" and smaller) | 1/2 |
Bathtubsa (larger than 60" × 32") | 1/2 |
Bidet | 3/8 |
Combination sink and tray | 1/2 |
Dishwasher, domestica | 1/2 |
Drinking fountain | 3/8 |
Hose bibbs | 1/2 |
Kitchen sinka | 1/2 |
Laundry, 1, 2 or 3 compartmentsa | 1/2 |
Lavatory | 3/8 |
Shower, single heada | 1/2 |
Sinks, flushing rim | 3/4 |
Sinks, service | 1/2 |
Urinal, flush tank | 1/2 |
Urinal, flushometer valve | 3/4 |
Wall hydrant | 1/2 |
Water closet, flush tank | 3/8 |
Water closet, flushometer tank | 3/8 |
Water closet, flushometer valve | 1 |
Water closet, one piecea | 1/2 |
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa.
- Where the developed length of the distribution line is 50 feet or less, and the available pressure at the meter is 35 psi or greater, the minimum size of an individual distribution line supplied from a manifold and installed as part of a parallel water distribution system shall be one nominal tube size smaller than the sizes indicated.
Related Code Sections
604.5 Water Supply and Distribution, Size of Fixture Supply
The minimum size of a fixture supply pipe shall be as shown in Table 604.5. The fixture supply pipe shall terminate not more than 30 inches (762 mm ...
Plumbing Code 2018 of Kansas > 6 Water Supply and Distribution > 604 Design of Building Water Distribution System > 604.5 Size of Fixture Supply
917.5 Vents, Minimum Vertical Piping Size From Fixture
The vertical portion of piping in a fixture drain to a horizontal branch shall be 2 inches (51 mm). The minimum size of the vertical portion ...
Plumbing Code 2018 of Kansas > 9 Vents > 917 Single-Stack Vent System > 917.5 Minimum Vertical Piping Size From Fixture
P2903.6 Water Supply and Distribution, Determining Water Supply Fixture Units
Supply loads in the building water distribution system shall be determined by total load on the pipe being sized, in terms of water supply fixture ...
Residential Code 2018 of Kansas > 29 Water Supply and Distribution > P2903 Water Supply System > P2903.6 Determining Water Supply Fixture Units