Dishwasher Drain Hose High Loop

The high loop does not prevent siphoning.

Dishwasher drain hose high loop.

An air gap is optional but not needed with a properly installed high loop drain line. A high loop means that the dishwasher drain hose is installed so that there s a u shaped bend above the point where the hose is connected to the drainage system. Figure 2 below shows the basic configuration of an installed high drain loop under a kitchen sink. The water can flow back into the dishwasher which will leave water in the bottom of the dishwasher.

The high drain loop bracket is a simple fast solution to prevent disgusting water from backing up into the dishwasher. The purpose of a dishwasher high drain loop is to prevent back flow of water. The drain hose is secured near the top of the sink in some fashion could be as easy as using a zip tie to secure it. Will work with most dishwashers that use a 1 2 or 5 8 drain hose.

Measurement is based on the inside diameter of the hose. The high loop is shown properly fastened to the underside of the countertop as needed. What is a high loop. The dishwasher hose is fitted onto the ribbed branch fitting and secured with a hose clamp.

The dishwasher high loop drain line is shown in the image. An air gap is a vent that goes up through the top of the sink or countertop. The high drain loop is also there to prevent improper drainage of water while the dishwasher is running. You want to have this loop as high as possible and attach it to the underside of the countertop underneath your kitchen sink.

When there is no garbage disposal present the dishwasher hose should run down from the air gap or high loop and connect to the sink drain by means of a drain tailpiece with a branch fitting. This informational video will show you how to put a high loop in your dishwasher drain line to avoid having this item show up on your home inspection. The high loop in the drain hose of your dishwasher is to keep water from settling in the hose if it were hanging down any lower or horizontally. Most municipal building codes require a high drain loop to address this problem.