biglurr54
10/19/2009, 07:15 PM
OK everyone heres a design i have been testing and have had great results with. Everyone hates dealing with keeping the water at the right level. When i bought my RODI unit it came with a pressure switch which turns the water off to the ro when the pressure in the finished water line builds up o a certain pressure. They use these systems for ro units that are used or sinks and such that have a reservoir tank. i was first going to use a kent marine float switch but i didnt want to drill my glass sump tank. i did some brain storming and spent some time walking around hd. i came to the toilet section.
Every toilet uses a float switch to control the levels in the tank. up until recently they have used metal on the switches and they were big and bulky. A while back the switched to a modern version that is a vertical tube with a small float around it. Again they had some metal on these. About a year ago i noticed that the metal disappeared and they were all plastic. I instantly bought one or about $7 and went to work.
I used 2 PVC 90 degree angles so i could angle the supply line up and out of the top of the tank. i used pvc cement to bond everything. I also used some JB weld on the bottom of the Toilet float valve in order to seal it completely. i used 1/4 inch tubing that is standard for RODI units. i got a fitting that threaded into the 90 degree angles. i plumbed it all up and tested it at full pressure from my house plumbing. The system will never se a pressure this high but it will provide a good test to check for leaks. i build a stand for it so it will not tip over or have anything block it or interrupt its functioning. When the sump is filled to the right level the float floats up and seals the valve. This will lowly create pressure in the line turning the supply line to the Ro off. now the system is dormant. through out the day, about 10-15 times in 24 hours, the tank will evaporate water and the level in the sump will drop, as will the float. this will open the valve and release the pressure on the RODI line turning the supply line back on. the tank will fill until the float switch turns off the RODI line and so start the cycle.
I have run this system for about 12 months now with out one failure or over flow or issue of any kind. the toilet valves seem to be extremely sensitive to water height. it is also very easy to set to any height with two different ways to adjust height.
ill post pictures when my girl friend returns my camera.
Every toilet uses a float switch to control the levels in the tank. up until recently they have used metal on the switches and they were big and bulky. A while back the switched to a modern version that is a vertical tube with a small float around it. Again they had some metal on these. About a year ago i noticed that the metal disappeared and they were all plastic. I instantly bought one or about $7 and went to work.
I used 2 PVC 90 degree angles so i could angle the supply line up and out of the top of the tank. i used pvc cement to bond everything. I also used some JB weld on the bottom of the Toilet float valve in order to seal it completely. i used 1/4 inch tubing that is standard for RODI units. i got a fitting that threaded into the 90 degree angles. i plumbed it all up and tested it at full pressure from my house plumbing. The system will never se a pressure this high but it will provide a good test to check for leaks. i build a stand for it so it will not tip over or have anything block it or interrupt its functioning. When the sump is filled to the right level the float floats up and seals the valve. This will lowly create pressure in the line turning the supply line to the Ro off. now the system is dormant. through out the day, about 10-15 times in 24 hours, the tank will evaporate water and the level in the sump will drop, as will the float. this will open the valve and release the pressure on the RODI line turning the supply line back on. the tank will fill until the float switch turns off the RODI line and so start the cycle.
I have run this system for about 12 months now with out one failure or over flow or issue of any kind. the toilet valves seem to be extremely sensitive to water height. it is also very easy to set to any height with two different ways to adjust height.
ill post pictures when my girl friend returns my camera.