Kitchen Sink Drain Pipe Size

All the pipes that connect to the tailpiece including the p trap assembly.

Kitchen sink drain pipe size. The horizontal pipes connect to the trap with a double wye tee which has two y shaped inlets and one outlet. Drains connect to either a 1 1 4 inch or 1 1 2 inch tail pipe. A 2 inch sink strainer fits the standard bar sink drain. The drainpipe threads onto this pipe with a connector.

A single trap can service more than one sink but adjacent drains cannot be farther apart than 30 inches. Kitchen sink is commonly connected up to two units or three units for one with disposer. Horizontal drain pipes connecting the sink drains to the trap must have a minimum slope of 1 4 inch per foot toward the trap. Some older sinks may have drains that connect to a 1 1 4 inch tailpiece but most modern drains have a 1 1 2 inch outlet.

The kitchen drainpipe connects to the drain under the sink. Compare the fixture to the minimum sizes of drainage pipe by fixture table. These drains like bathroom and kitchen drains use a p trap which is a j shaped pipe that connects to the main drain line. Unlike drain pipe on the shower or tub that will be connected to two units this sink drain pipe will be connected to only one unit on the drain line.

For instance the minimum pipe diameter for a washing machine drain is pipe with a 1 1 2 inch diameter.