Kitchen Sink Drain Pipe Size

The drain has a threaded pipe sticking out below the lock nut that secures the drain to the sink basin itself.

Kitchen sink drain pipe size.

Compare the fixture to the minimum sizes of drainage pipe by fixture table. Horizontal drain pipes connecting the sink drains to the trap must have a minimum slope of 1 4 inch per foot toward the trap. The kitchen drainpipe connects to the drain under the sink. All the pipes that connect to the tailpiece including the p trap assembly.

A single trap can service more than one sink but adjacent drains cannot be farther apart than 30 inches. 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. 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.

Since the pipe is 1 1 2 inch in diameter kitchen drainpipes are also 1 1 2 inches in diameter. For instance the minimum pipe diameter for a washing machine drain is pipe with a 1 1 2 inch diameter. These drains like bathroom and kitchen drains use a p trap which is a j shaped pipe that connects to the main drain line. Kitchen sink is commonly connected up to two units or three units for one with disposer.

The drainpipe threads onto this pipe with a connector.