It is 3/8" since that is the correct size for an air-gap faucet. Hope this helps!
Posted this in plumbing, but realized it might be more appropriate here:
Is there any such thing? I am tired of the racket my undersink RO filter makes dribbling the wastewater through a saddle drilled into the top of the garbage disposal lateral pipe. No leaks, but noisy as hell.
Surely some enterprising young man has addressed this market with a sink tailpiece that quietly trickles the water down the side of the drainpipe into the p-trap through an angled inlet? It needs to mate up to 1/4 polyethylene tubing.
Or would moving the saddle to the sink downpipe instead of the disposer lateral be enough to quiet it? It is a permeate-pumped 45 gallon per day RO and seems to put out a decent wastewater stream, at least for an RO filter.
How to rebuild a softener http://www.youtube.com/watch?v=8YkJS...ature=youtu.be
Actually, they say "Inlet port directly accepts 3/8" and 1/2" O.D. poly tubing." And... there's always duct tape. To narrow down their zillion AirGap products, start at http://www.airgap.com/drainFitting.htm.
Last edited by Mikey; 02-02-2013 at 04:29 AM.
It's still a crap shoot whether or not it will be much quieter.
I installed my RO under the floor rather than under the counter and I ran the drain line over to my sump pit rather than to my septic tank. My softener and iron filter also discharge into my sump pit as do the humidifier, furnace, A/C, and HRV condensate lines.
Thanks, that looks promising.
Here in California we don't have basements, and I don't have a sump pit. Perhaps I should water some plants with this "waste" water. Oh, but it is salt-softened, so no.
This is what I use. Work quite well.