Scorp100 Posted July 21, 2005 Report Share Posted July 21, 2005 What is allowed/not allowed under the kitchen sink when RO units are installed? Specifically, RO drain connections becoming a "cross connection". Thank you in advance for your help on this subject. Quote Link to comment Share on other sites More sharing options...
Scottpat Posted July 22, 2005 Report Share Posted July 22, 2005 What is a RO unit? Perhaps "Reverse Osmoses". Quote Link to comment Share on other sites More sharing options...
Scorp100 Posted July 22, 2005 Author Report Share Posted July 22, 2005 Yes. Reverse Osmosis. We see these a lot in my area due to the bad tasting city water we have. Although we do not inspect the R/O units, we do need to report on cross connections. Some R/O units use 4 gallons of water to make one gallon of purified "R/O" water. The wasted water must be drained off. Typically this involves placing a saddle clamp on the kitchen sink's drain line. I'm asking any Plumbing experts out there "what is allowed and what is not allowed in this application"? i.e. I've seen the R/O drain line installed down stream from the P-Trap, which I feel is a cross connection. Yes, No? Quote Link to comment Share on other sites More sharing options...
JEuriech Posted July 23, 2005 Report Share Posted July 23, 2005 Dave, Most of the RO systems that I see have an air gap built into the faucet/handle combination. Depending on which way the assembly is turned, you can see the drain water dropping through the air gap. I will normally run some RO water for about 30 seconds and the pressure in the system will start to drop. A valve will then switch on the unit allowing make up water to go to the membrane and drain water to occur. You can normally hear the water dropping through the air gap at the faucet. Some of the older units do not have a built in air gap in the faucet. They will instead have a flow control/check valve located on the drain line to prevent a backward flow from the drain to the RO membrane. The ones I see are small plastic valves with an arrow on them showing direction of flow. Maybe 2" long and 3/4" in diameter. These are normally hidden behind junk. You have to look for them. I hope this helps, Jeff Euriech Peoria, AZ Quote Link to comment Share on other sites More sharing options...
Scorp100 Posted July 25, 2005 Author Report Share Posted July 25, 2005 Jeff, That was a huge help! Thanks for the explanation and tips. This is exactly what I needed/wanted. [:-thumbu] Quote Link to comment Share on other sites More sharing options...
Brian G Posted July 26, 2005 Report Share Posted July 26, 2005 I didn't know there was a Peoria, AZ. Welcome to the board Jeff. Brian G. Quote Link to comment Share on other sites More sharing options...
JEuriech Posted July 27, 2005 Report Share Posted July 27, 2005 Thanks Brian. I'm the new kid (senior citizen) on the Northwest side of Phoenix. I am slowly increasing my business and hopefully will make money at this one of these days. One of my goals for the next year is to more actively participate on the different message boards. So you will probably see more of me in the future. Hopefully you will not laugh too hard at some of the questions that I may ask. I guess time will tell... Jeff Euriech Peoria, AZ Quote Link to comment Share on other sites More sharing options...
Brian G Posted July 27, 2005 Report Share Posted July 27, 2005 Originally posted by JEuriech One of my goals for the next year is to more actively participate on the different message boards. I'm sure you'll find it to be a great education, as I have, at a cost that's hard to beat. So you will probably see more of me in the future. Hopefully you will not laugh too hard at some of the questions that I may ask. I guess time will tell... I've always believed the learning curve is steeper for those who participate, be it online or in person. Ignore the part of you that says "Don't ask that, you'll sound dumb". Having free access to this wealth of knowledge and experience and not asking is dumb. Brian G. Heavy Duty Participator [:-graduat Quote Link to comment Share on other sites More sharing options...
swarga Posted July 27, 2005 Report Share Posted July 27, 2005 Jeff, Feel free to contact me anytime you have a question. E-mail me and I'll give you my cell #. I don't want to post it here, some poet/wooden water heater pan maker may write it on a bathroom wall.[:-banghea Quote Link to comment Share on other sites More sharing options...
Brian G Posted July 27, 2005 Report Share Posted July 27, 2005 Originally posted by swarga I don't want to post it here, some poet/wooden water heater pan maker may write it on a bathroom wall. "Love puppy seeks dominate male big-dog. For a good time call Scott at 1-800-SPANK-ME" [:-doggy] Brian G. Perish the Thought That I Would Do Such a Thing [:-dev3][][:-dev3] Quote Link to comment Share on other sites More sharing options...
chrisprickett Posted July 27, 2005 Report Share Posted July 27, 2005 Originally posted by swarga Jeff, Feel free to contact me anytime you have a question. E-mail me and I'll give you my cell #. I don't want to post it here, some poet/wooden water heater pan maker may write it on a bathroom wall.[:-banghea Jeff, I'd also be happy to help, if I can. I do a lot of work in Peoria, but there's plenty to go around. I'm not as smart as Scott, but I'm much prettier! Quote Link to comment Share on other sites More sharing options...
Garcha Posted July 27, 2005 Report Share Posted July 27, 2005 Jeff, I didn't know anything until I started watching this board. Now, not only do I know how to build a wuden drane pan, I can spell it two. BTW Brian you could have used a ceramic roll-on sealer to water proof that thing just in case you actually need to use it. Of course then it would be pink... All kidding aside Jeff, I have to say these guys are the best and most helpful group of HI's you could ever talk to. They are not afraid to ask questions and never give anyone a hard time for asking really silly questions (of which I'm guilty). Welcome aboard! Mike Quote Link to comment Share on other sites More sharing options...
JEuriech Posted July 29, 2005 Report Share Posted July 29, 2005 Thanks for the warm welcome. I'm sure that I will be learning a lot from everyone on this message board. Jeff Euriech Peoria, Arizona Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.