Kitchen Sink Drain Dishwasher Connection

When you connect a dishwasher drain to the sink drain the potential exists for the dishwasher pump to siphon wastewater from the sink and contaminate the dishwasher.

Kitchen sink drain dishwasher connection.

Connecting dishwasher to an air gap. If your kitchen sink drain is corroded and leaking installing a new basket strainer is an easy way to solve the problem. The reason for the loop is so water draining from the kitchen sink cannot drain back into the dishwasher. How to connect a dishwasher to a double sink.

Tips tricks and proper drain and venting methods. Use a measure tape to check the distance from the larger outlet on your airgap to the drain line for your kitchen sink. To prevent this the uniform plumbing code upc requires a dishwasher air gap a small dome shaped fitting that mounts to the deck of the kitchen sink or to the countertop. If an air gap fitting is used there will be two lengths of drain hose.

A single trap can service more than one sink but adjacent drains cannot be farther apart than 30 inches. Start by adding plumber s putty to the underside of the basket strainer and fit it into the drain hole at the bottom of the sink. Cut the spare piping provided with the kit to the correct size. The horizontal pipes connect to the trap with a double wye tee which has two y shaped inlets and one outlet.

Showing how the pros connect a kitchen sink drain and demonstrating different venting methods. The factory drain hose on the dishwasher which runs from the dishwasher to the smaller of the two tailpieces on the air gap and a 7 8 inch inside diameter hose that runs from the other tailpiece on the air gap to the dishwasher nipple on the garbage disposal. You want to have this loop as high as possible and attach it to the underside of the countertop underneath your kitchen sink. A newly installed dishwasher not only needs a water supply but it needs somewhere to drain the water from the tub once it completes the wash cycle.

The drain hose starts at the bottom of the dishwasher and loops up to a higher point than the kitchen sink drain and then comes down to connect to either the kitchen sink drain or the garbage disposal. Now attach the one end of the pipe to the second outlet on the airgap stem the same way you attached the dishwasher pipe to the first outlet.