Foto-n-T
Well-known member
A week or so ago I posted a thread regarding installing an RO system in an RV. After taking the responses to heart I was wandering around Lowes and came across a Whirlpool RO system for $147 that had a small 9"x14" pressure tank with the kit, it came home with me.
The installation was pretty straight forward with one exception, the drain system contained in the kit wasn't compatible with the drain stem coming from the kitchen sink. The solution was to drill a 3/4" hole in the sink drain pipe above the P trap and thread a 90 into it that had a 3/8" compression fitting compatible to the kit drain system. To feed the system with fresh water I used the output to the small spigot on the sink that originally had a 5 micron filter on it, we never used it anyway. That spigot was replaced by the RO output so it was a win-win situation although I did have to open the hole in the sink and counter to 1 3/8" instead of the original 1/2". To facilitate boondocking I did install a valve on the water input to the RO system so that it can be easily disabled when we're not on full hookups. Originally I thought about dumping the RO water into our fresh tank and using it in lieu of a pressure tank but after using the kit storage tank for the last few days I'm not even going to consider the extra work of doing that.
Although the pressure tank does take up some extra space under the sink, the fact that we no longer have between 2 and 6 one gallon jugs of water taking up space in the garage pantry far outweighs the lost storage space under the sink. It is so much more convenient to simply open the spigot on the sink for drinking water, coffee maker etc.
About the only thing that I can see that might be an issue would be winterizing, I'll probably have to remove the membrane canister and replace it with a dummy to push antifreeze through when I have to winterize.
The installation was pretty straight forward with one exception, the drain system contained in the kit wasn't compatible with the drain stem coming from the kitchen sink. The solution was to drill a 3/4" hole in the sink drain pipe above the P trap and thread a 90 into it that had a 3/8" compression fitting compatible to the kit drain system. To feed the system with fresh water I used the output to the small spigot on the sink that originally had a 5 micron filter on it, we never used it anyway. That spigot was replaced by the RO output so it was a win-win situation although I did have to open the hole in the sink and counter to 1 3/8" instead of the original 1/2". To facilitate boondocking I did install a valve on the water input to the RO system so that it can be easily disabled when we're not on full hookups. Originally I thought about dumping the RO water into our fresh tank and using it in lieu of a pressure tank but after using the kit storage tank for the last few days I'm not even going to consider the extra work of doing that.
Although the pressure tank does take up some extra space under the sink, the fact that we no longer have between 2 and 6 one gallon jugs of water taking up space in the garage pantry far outweighs the lost storage space under the sink. It is so much more convenient to simply open the spigot on the sink for drinking water, coffee maker etc.
About the only thing that I can see that might be an issue would be winterizing, I'll probably have to remove the membrane canister and replace it with a dummy to push antifreeze through when I have to winterize.