Water Closet Pipe Size

The supply pipe shall extend to the floor or wall adjacent to the fixture.

Water closet pipe size.

The closet bend is also 3 inch pipe however there are various closet bend sizes. One end in most cases the inlet is 4 inches wide this mounts to the toilet and the outlet end is 3 inches in diameter. Closet bend 4 3 closet bend connects to 3 inch schedule 40 pipe. Appliances appurtenances and fixtures not referenced in the table below shall be permitted to be sized by reference to fixtures having a similar flow rate and frequency of use.

304 8mm 1 gallon m 3 785l m. The minimum size of a fixture supply pipe shall be as shown in table 604 5. Water velocity should not be greater than 2 438m s at valve seat to prevent noise and erosion. The closet bend installs below the toilet and connects to the main drain stack.

Toilet water supply line 1 2 inch copper pipe or plastic pipe routed from main water line or 1 2 inch cold water line. Most toilet installation parts are made to fit these pipe sizes. The listed fixture unit values represent their load on the cold water building supply. Unit sizes provided in the table 1 and table 2 is in mm but the size of pipes in the chart is in inch.

A reducing closet bend configuration or a 4 3 closet bend has two different sized ends to connect two different sized pipes. So pipe area should be at least equal to water flow rate divided by eight. This pipe fitting is set under the toilet in the floor joists or ground in toilets on concrete slabs. Water supply fixture units wsfu and minimum fixture branch pipe sizes.

1 inch 25 4mm 1 ft. The top of the closet bend is 3 inch diameter pipe while the other end is 4 inch.