Water Closet Pipe Size

The minimum size of a fixture supply pipe shall be as shown in table 604 5.

Water closet pipe size.

The closet bend installs below the toilet and connects to the main drain stack. Closet bend 4 3 closet bend connects to 3 inch schedule 40 pipe. The closet bend is also 3 inch pipe however there are various closet bend sizes. Water supply fixture units wsfu and minimum fixture branch pipe sizes.

Water velocity should not be greater than 2 438m s at valve seat to prevent noise and erosion. The top of the closet bend is 3 inch diameter pipe while the other end is 4 inch. The closet bend actually has two diameters because it connects the 3 inch drain pipe to the 4 inch drain line. 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. The listed fixture unit values represent their load on the cold water building supply. Most toilet installation parts are made to fit these pipe sizes. 1 inch 25 4mm 1 ft.

This pipe fitting is set under the toilet in the floor joists or ground in toilets on concrete slabs. Toilet water supply line 1 2 inch copper pipe or plastic pipe routed from main water line or 1 2 inch cold water line. 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. A reduced size flexible water connector installed between the supply pipe and the fixture shall be of an approved type.

304 8mm 1 gallon m 3 785l m. 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.