supply and drain tied together??

[brother]

I was looking at a rinser that only had one way to to fill it up and one way to drain. it used the same pipe. Now mind you there was (I believe a backup valve?) 2 solonoids that when one is open that let the water in the one going to the drain is closed, and when the drain is open the supply is closed.

The only problem I have is that for a short section about 2ft to 3ft the drain water can be mixed with the supply water, (thats just the residual). I admit im not a plumber, but would this set up be legal?? Even if it was I would not want anything I got with this set up. Any guidance would be appreciated.

[Redwood]

How about a picture of what you are talking about...

[Gelo30]

Hard to figure out. what you elaborate and show some diagram of that.

[hj]

ANY device that had both drain and potable water where they could mix, regardless of how the solenoid valves were cycled, WILL BE ILLEGAL, unless it had very stringent protective devices.

[Gary Swart]

Just the thought of supply and drain connected anyway should be a red flag to you. I think if anyone on this forum knew of such a thing, it would be HJ and he obviously doesn't. So, whatever you are trying to do needs at least a Plan B.

[brother]

I wish I could put a picture up, dont really know how. this is something Ive found, even though they have a 'electric' solenoid and another valve that suppose to keep the 2 from mixing. But like I said there is just the last little bit of plastic tube (pipe), that a little residual of the drain is left. What is a code I can find to quote to these guys.

[brother]

Just the thought of supply and drain connected anyway should be a red flag to you. I think if anyone on this forum knew of such a thing, it would be HJ and he obviously doesn't. So, whatever you are trying to do needs at least a Plan B.

This is NOT something im doing, so no 'plan b' is needed for me. This is just something I ran into and it was installed by a plumber.

[SewerRatz]

If you could find a name on this it might help.

[hj]

This may be a duplicate or it may not have been posted the first time. There is no legal device which would connect water and sewer together, without some physical gap/barrier, regardless of any valve sequence to keep them separated. And NO amount of drain water in the water line is acceptable, even if it were just some infinitessimal drops.

[brother]

If you could find a name on this it might help.

I will see what I can do.

[Redwood]

What is this used on?
I'd like to have some clue of what you are talking about.

[hj]

That has been the problem from day one, because I cannot visualize any use for this thing, how it was made, or who made it, or more important WHY it was made.

[SteveW]

Are we talking about a kitchen fixture?

I saw an in-counter pasta boiling arrangement at a high-end kitchen store once, which appeared to have a solenoid-controlled drain at the bottom. (to fill it you used a swinging pot filler faucet from above.)

[SewerRatz]

Are we talking about a kitchen fixture?

I saw an in-counter pasta boiling arrangement at a high-end kitchen store once, which appeared to have a solenoid-controlled drain at the bottom. (to fill it you used a swinging pot filler faucet from above.)

I have seen this too, it was a Kohler pasta boiler that was built into a sink that is connected to the drain with a solenoid controlled drain. I could never wrap my mind around how that was allowed having a boiler tied into the sanitary waste system. http://www.designtool.kohler.com/us/...sp?item=241302

[SteveW]

That's the one!

I see it is discontinued.