Toilet Drain Size

Local codes may call for a 4 inch main drain and some plumbers prefer to run larger vent pipes.

Toilet drain size.

I d say 80 of toilets have a 12 rough in so don t be surprised if you do as well. The number of units on one drain pipe helps to calculate the size of pipe needed. Check toilet to confirm location water supply connection. A toilet is considered as six units because of how much water it discharges at once.

Ideally 8 1 4 inches above the floor. Slope this pipe at 1 8 inch per foot grade to the main drain stack. Toilet rough in details. Toilet fitting sizes flush valve drain hole sizing in most cases for 2 inch toilets this will result in a drain hole size in the range of 2 3 8 to 2 3 4 and so the flange and gasket combinations on our 2 dual flush valves will fit and seal this size range effectively.

Some homes may use a 3 inch stack. However some homes may have a smaller drain pipe diameter. These plans call for 3 inch diameter pvc pipe for the main drain and the short length leading from the toilet to the drain and 2 inch pvc for the other drain lines and the vents. Standard toilet rough in common rough in sizes the standard toilet rough in is 12.

What size are toilet waste drains. The drain line leading from the closet bend to the drain stack is 4 inches in diameter. Waste drain pipes for toilets in modern plumbing systems are either 3 inches or 4 inches in diameter. Measured from centerline running vertically through the center of the toilet supply line hole should be 6 inches to the side of centerline.

Most homes use a 4 inch drain pipe only high rises supporting more than 5oo appliances use a larger pipe size. There are however other rough in sizes. The wider the pipe the more waste it can move and the. Main toilet drain or stack 4 inch pvc or iron pipe.

This is the home s main drain line the drain pipe connects to this pipe.