N
The Daily Insight

Can I use flexible pipe for sink drain?

Author

John Peck

Updated on March 29, 2026

Flexible drain parts can be used to quickly connect offset sink drains. It is possible to cut out the pipes under the sink and install a new sink drain using a 45- or a 90-degree bend to make up the difference, but it may not be necessary for a minor misalignment.

Is there a flexible drain pipe?

The Flexible Drain Pipe system is a revolutionary landscape drainage system for residential and commercial use and the newest brand of product for Rain Bird. This unique pipe expands and flexes, making it perfect for tight spaces and curvy places.

What is the diameter of a sink drain pipe?

1 1/2-inch
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. All the pipes that connect to the tailpiece, including the P-trap assembly and all the horizontal extensions, are either 1 1/4 or 1 1/2 inches in diameter.

Why are flexible P traps bad?

When you use a flexible p trap, you’re more likely to get the shape wrong, and you’re more likely to accidentally misshape it when you bump the pipe. Or when you bump it, the force might cause it to spring a leak. When you go to sell the house, the building inspector will take a dim view of these. They’re against code.

What type of pipe is used for a sink drain?

PVC Pipes
PVC Pipes PVC is a plumbing pipe known for its versatility, lightweight, and blockage resistance. PVC piping is generally used as part of a sink, toilet, or shower drain line, though it’s sometimes used as a home’s main water supply pipe.

What is the difference between AJ bend and AP Trap?

The J-bend beneath the sink is also referred to as the P-trap, the U-bend and sometimes even just the drain trap. In some cases, however, hand-tightening may not seat the washer correctly, particularly if your drain pipes are metal, so slip-joint pliers will often come in handy.