A dishwasher air gap is a critical component in maintaining a safe water supply. It prevents contaminants in the sink from flowing into the dishwasher and is required by code in most states.
The ET200-002 dual dishwasher air gap provides many advantages over other air gaps available on the market and also ensures safety and peace of mind that your water supply is clean.
A common misconception is that a “high loop” (routing a drain line above a sink’s flood level, for instance) and a wye connection will provide the same function as an air gap; this is not true, because the continuous connection between dishwasher and drain line still will allow back-flow through siphoning.
This air gap is easy to use and legal to install in any state. The ET200-002 air gap is listed by UPC and tested for compliance with IPC and NSF standards.