Bypass air gap feature in faucet.
Ro faucet air gap noise.
They sometimes back up all over your counter top.
There can be several reasons that a reverse osmosis system might make some noise.
A new reverse osmosis drinking water system may have air pockets in it at first.
This usually leads to the typical gurgling noise when the system fills up the storage tank.
If you still have problems then do 5 and/or 6.
You may hear air being pulled thru the air gap with reverse osmosis (r/o*) systems causing this noise.
A standard faucet has only the permeate line, the one on the left.
This hole has waste water go into the top and out the bottom.
The noise i'm talking about is air coming through the small hole in the air gap faucet.
Without the air gap in place it is possible for the user to call for water and the system pull water that was put.
In many areas the local plumbing code requires the use of an air gap faucet with an ro system (and air gap faucets only work with air gap ro systems).
I put a piece of tape over the hole.
If the drain tubing from the air gap faucet on the reverse osmosis hookup that connects to the drainpipe sags lower than the point where it connects to the drainpipe, water dripping from the end can cause the drain tube to create a periodic siphoning effect, making a gurgling noise.
The number one reason why your faucet may be making noise is because there are particles or bumps on the surface of your faucet.
Either extend faucet drain tube and submerge in trap water or use a material like string or fishing line to connect
Since air gap faucets are often unpopular with homeowners because of noise and messes on the sink when the drain line blocks, some manufacturers provide reverse osmosis with standard faucets.
The ro drain line connects directly to the undersink drain.
I pulled the line out of the drain.