If you do not have an air gap for your dishwasher, you can connect it using an alternative method called a high loop or loop vent. The high loop serves as a backup to prevent backflow of wastewater into the dishwasher. Here's how you can connect a dishwasher without an air gap:
Locate the drain hose: The dishwasher's drain hose is typically located at the back of the dishwasher, near the bottom. It is usually flexible and made of rubber or plastic.
Identify the drain point: Find the drain pipe under your sink where you will connect the dishwasher drain hose. The drain pipe is usually located under the sink, connected to the plumbing system.
Prepare the drain hose: Ensure the dishwasher is disconnected from the power supply. Take the dishwasher's drain hose and create a loop as high as possible under the sink. The loop should be higher than the drain point and should go above the level of the sink before descending towards the drain point.
Secure the high loop: Use a strap, hook, or zip tie to secure the high loop in place. Make sure it is firmly attached to a nearby cabinet or wall, keeping it elevated.
Connect the drain hose: Take the end of the dishwasher's drain hose and connect it to the drain point under the sink. It is typically connected to the garbage disposal unit or directly to the drain pipe. Ensure the connection is secure and tight to prevent leaks.
Test for leaks: Once the connections are made, turn on the water supply to the dishwasher and check for any leaks. Also, run a test cycle on the dishwasher to ensure proper drainage.
By implementing a high loop in the drain hose, you create a physical barrier that prevents wastewater from flowing back into the dishwasher in case of a plumbing backup. It acts as an alternative to an air gap device, offering a similar level of protection. However, it's important to check local plumbing codes and regulations, as requirements may vary in different regions.