A reverse osmosis air gap is a critical component in maintaining a safe water supply. It prevents contaminants in the sink from flowing into the clean water supply and is required by code in most states. The AG200-009’s maximum flow rate is 0.8 gallon per minute (GPM). The maximum flow rate through this air gap is the highest flow rate above which the air gap will overflow. At maximum flow rate, the air gap is dry on the outside. The AMERIGAP brand reverse osmosis air gap provides a 1/4-inch push-in quick connect inlet that accommodates both with tank and tankless reverse osmosis filters. It also provides a 3/8-inch push-in quick connect outlet to drain RO filter. This air gap is easy to install, easy to use, and easy to maintain. The AG200-009 air gap is listed by UPC and tested for compliance with IPC and NSF standards.