The “air gap” faucet is really a plumbing device designed to provide a siphon break for the drain collection of an undersink reverse osmosis unit.
If you have a filter, not much of a reverse osmosis unit, there is no drain connection and you may not want an aura gap faucet.
When you have water softener magnets, you might or might not want an aura gap faucet. Air gap faucets get their positives and negatives.
The goal of air gap is always to ensure that no water from the stopped-up sink drain may possibly be forced or siphoned backward into the reverse osmosis unit via its drain connection. The atmosphere gap system accomplishes this by routing the unit’s drain water upward to a small trough that are part of the lower faucet, rather than right to the drain pipe. The liquid then flows on the other side of your faucet stem, where it falls right into a hole and drops by force of gravity right into a 3/8″ flexible tube, to the drain pipe.
The atmosphere gap faucet itself requires, therefore, three tubes instead of one – the initial one is for the upward drain water, one is to the downward drain water, plus a third is designed for the unit’s product water, that you drink. Because of this it should have a wider base and will need a larger hole from the sink for installation. This too means a much more complicated installation.
The faucet itself includes a small hole in the body to ensure water can flow out to the sink or countertop when the drain tube become clogged. This may not be an infrequent occurrence, ever since the drain water is not really pressure-driven or even a small piece of food or some other debris lodged from the inlet in the drain connection can stop the line and let the reverse osmosis unit’s drain water to circulate out on the countertop.
Another frequent complaint of air gap faucet users is noisy performance. Some faucets put out a gurgling sound as soon as the unit is filling its storage tank.
Plumbing codes in many areas require the usage of an aura gap faucet with reverse osmosis units. These requirement are often ignored.
We supply air gap faucets upon request but our standard units feature non-air gap models if no air gap request is made.