plumbing straight into a sink drain?

[MBVette]

This afternoon I was looking around the tank and starting thinking about water changes. On the old tank I had to siphon the water out into jugs and then move it to a sink to dump it all out; and that was the plan for this tank as well b/c I dont have a much better option.

 

Then I got to thinking that maybe I could run a line off my manifold and have that hose run straight into a nearby sink or better yet drain into the sinks plumbing. Im sure I can run the hose to the sink w/o any real problem, just need to secure the line and drill a small hole. But is it possible for me to tap into the sinks drain and just use that instead of running it onto the counter and then into the sink?

[Rosco's Reefs]

this is what I am doing for my rodi. My new plan will use the drain from my washer to take the old salt water.

[rocko918]

my basement is unfinished, so i tapped into my sink drain line above the sink. I drain the water with my closed loop pump.

[MBVette]

what are you guys using to tap into the plumbing? I assume I would tap it above the trap? And how would I make sure the water draining from the sink did not move towards the tank.

[Chad]

Use something like this: http://www.isopurewa...ass_p_2136.html

 

or http://www.isopurewater.com/TGI-Pure-VV-DSP014JG-Drain-Saddle-Valve-14-JG-Quick-Connect_p_2134.html

[MBVette]

Thats for a really small hose; and draining water for a 40 gallon change would take forever. lol

[Chad]

Is the plumbing pvc? If so, why not redo the plumbing to add a drain line?

[MBVette]

Yup it's all PVC. What piece would you use? A sanitary T above the trap?

[Chad]

Yes, that's exactly what I would use.

 

If needed, you can extend the downstream side of the trap by the same distance as what is added with the tee.

[Origami]

I prefer an airgap just to keep the two systems separate and sanitary. Thus, I'll run a hose into the top of the sink from the manifold.

[MBVette]

I prefer an airgap just to keep the two systems separate and sanitary. Thus, I'll run a hose into the top of the sink from the manifold.

The more I think about it this is probably the way to go for me. It is a commercial building and I don't know that I want to deal with th health department if I make a mistake and they catch what I did. So I think I might just attach it to the top of the sink.

[zygote2k]

The more I think about it this is probably the way to go for me. It is a commercial building and I don't know that I want to deal with th health department if I make a mistake and they catch what I did. So I think I might just attach it to the top of the sink.

better be doing things up to code in that commercial building- after 1 fire, the insurance company may send an inspector to evaluate your install.

[Chad]

Here's the code:

 

http://www2.iccsafe.org/states/virginia/Plumbing/PDFs/Chapter%207_Sanitary%20Drainage.pdf

 

(I did notice that saddle drains are specifically prohibited...)