sink tailpiece with bung for RO filter brine water. Quiet.

**lifespeed** · 02-01-2013, 02:49 PM

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.

**ditttohead** · 02-01-2013, 04:22 PM

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www.airgap.com
It is 3/8" since that is the correct size for an air-gap faucet. Hope this helps!

**Mikey** · 02-02-2013, 04:27 AM

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.

**LLigetfa** · 02-02-2013, 06:25 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.

**lifespeed** · 02-02-2013, 11:04 AM

Thanks, that looks promising.

**lifespeed** · 02-02-2013, 11:19 AM

Originally Posted by LLigetfa

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.

That thought has occurred to me, but I'm sure it will improve on my current maximum-noise drain line connection point. It only became extra annoying after the permeate pump upgrade (which I do like) increased the flow rate.

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.