Gap-A-Ro Reverse Osmosis Filter Air Gap, w/ 3/8" Inlet Ports and 3/8" Outlet (1/2 GPM)

The AG110-001 reverse osmosis (RO) filter air gap prevents backflow from the standpipe into the RO system. This unit is a gravity flow device and, as such, must have an outlet tubing feed directly to a drain without kinks and bends.
The GAP-A-RO air gap's maximum flow rate is 1 gallon per minute (GPM). The maximum flow rate through an air gap is the flow rate at which water does not splash outside an air gap. The air gap is dry on the outside at the maximum flow rate.
The AG110-001 air gap must be installed per the manufacturer's instructions, and the outlet side feeding directly into a standpipe. This configuration lets the discharge water stream flow freely through the outlet tubing. The inlet and outlet ports fit 3/8" OD poly tubing and 5/8" ID poly tubing. For the 5/8" ID tubing, the AG110-001's design enables it to be used for an inlet or outlet, be part of a double-sealed system, or provide added mechanical protection to the inside tubing. The 5/8" ID poly tubing fits up to the last marking on the inlet and outlet sides of the AG110-001.
The AG110-001 air gap provides the following advantages: Super strong material to provide a secure connection, tested and listed for compliance with applicable plumbing codes, is easy to install, easy to use, and easy to maintain.