The high drain loop is also there to prevent improper drainage of water while the dishwasher is running.
Dishwasher drain hose high loop.
The dishwasher hose is fitted onto the ribbed branch fitting and secured with a hose clamp.
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.
An air gap is a vent that goes up through the top of the sink or countertop.
The water can flow back into the dishwasher which will leave water in the bottom of the dishwasher.
The dishwasher high loop drain line is shown in the image.
The high loop is shown properly fastened to the underside of the countertop as needed.
This keeps the drain hose dried out and keeps.
Will work with most dishwashers that use a 1 2 or 5 8 drain hose.
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.
Connecting dishwasher to an air gap.
An air gap is optional but not needed with a properly installed high loop drain line.
What is a high loop.
The purpose of a dishwasher high drain loop is to prevent back flow of water.
Figure 2 below shows the basic configuration of an installed high drain loop under a kitchen sink.
You want to have this loop as high as possible and attach it to the underside of the countertop underneath your kitchen sink.
Most municipal building codes require a high drain loop to address this problem.
The high loop does not prevent siphoning.
The high drain loop bracket is a simple fast solution to prevent disgusting water from backing up into the dishwasher.
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.
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.