RO systems.

[raybark]

Originally Posted by DavidCampen

The Aquatec 8800 series pumps do not have a pressure shut off switch just a pressure bypass. If I was filling a pneumatic tank I would install an pressure switch external to the pump to shutoff the pump and feed water. An ASO will not be used since I will use a solenoid valve to shutoff the feed water. Since I will be dumping to an open tank I will use tank level controllers for these functions instead of a pressure switch.

David, I have installed them with Aquatec pressure switches. They are available in 40, 60, or 80 psi.

Solenoid is a good idea. That's how I did a 4 unit assembly not long ago.

Seems to me that a simple float valve would be sufficient.

Originally Posted by DavidCampen

Actually, the pneumatic tank is not only practical but almost necessary. That is why the engineers that designed the well pump that you use as a delivery pump incorporated a pneumatic tank directly into its design as you mention below.

I agree totally. I thought you were referring to the ones usually supplied with systems. The one on my jet pump is much larger and handles much higher pressure.

Originally Posted by DavidCampen

I wouldn't consider the citric acid to be a significant pollutant. It is non toxic and will be dumped into a sanitary sewer where it will be converted to carbon dioxide at the sewage treatment plant.

Whether you consider it so or not is irrelevant. The authorities might think differently. Of course, in small volumes you might get away with it.

Have fun with the design and assembly. When you start looking at purchasing, let me know and I might be able to get you some good prices on components.

[ttimpain]

RO is One kind of Machine which is used to pure a water.People have to attach in that house rather than drinking a normal water.The Normal water is danger to our health.The are various type of RO system available in market.