Water Closet Drain Pipe Size

Compare the fixture to the minimum sizes of drainage pipe by fixture table.

Water closet drain pipe size.

The gasket tightens as the flange is turned in a clockwise rotation. When cast iron soil pipe is used the connection is made by means of 4 in. The drainpipes are made of cast iron galvanized pipe copper or plastic. Water closet s flushing 1 6 gallons or less are rated at 3 dfus drainage fixture units.

The waste for the water closet should be 4 in. Table 710 1 2 horizontal fixture branches and stacks a diameter of pipe inches. Water flow gpm gph based on pipe size and inside outside diameters. That said we put together the following tables to serve as general guides for estimating a pipe s water flow capacity.

The toilet s drain size. The third option is the pvc or abs replacement closet repair flange which also inserts into the vertical cast iron drain pipe after the old flange is removed. The minimum size of any building drain serving a water closet shall be 3 inches. The drainpipes collect the water from sinks showers tubs and appliances.

What size are toilet waste drains. The drain pipe in your toilet carries waste away into the home s main drain line. The wider the pipe the more waste it can move and the. Waste drain pipes for toilets in modern plumbing systems are either 3 inches or 4 inches in diameter.

Regardless of your plumbing code the minimum drain size for a toilet is 3 inches. Lead bend the pipe or bend being wiped to a brass ferrule which is caulked into the soil pipe and the floor connection generally being made by means. In size but never less. For instance the minimum pipe diameter for a washing machine drain is pipe with a 1 1 2 inch diameter.

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 waste pipes remove water and material from the toilet.

The vent pipes remove or exhaust sewer gases and allow air to enter the system so that the wastewater flows freely. Connections for water closet. If you have questions please call our drain wizard at 800 635 0384. Remember that the bottom of the flange must be set on top of the finished flooring and then screwed into the subfloor.

The standard size for a toilet drain pipe is 3 inches in diameter but drains up to 4 inches in diameter are often used.