Auto Shut Off Kit for Reverse Osmosis Systems

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Auto Shut Off Kit for Reverse Osmosis Systems

96% Recommend this to a friend (66 of 69)

SKU: 200212

reg. $24.99

Special Price: $21.24

In Stock: 151
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Quick Overview

The auto shut off kit uses a float valve to shut off a reverse osmosis system when the desired storage container is full. Installation is easy and only takes a few minutes.


Full Details

Installation Instructions


Auto shut off valves (ASOV) are great for reverse osmosis systems and will allow your RO system to automatically turn on and off based on the activation of a float valve. Auto shut off valves do require a minimum of 40 PSI to operate correctly and can be installed on any style of reverse osmosis system that uses 1/4" tubing.


Auto Shut Off Kit Includes:

  • Float valve
  • 5ft of tube
  • Inline check valve
  • 1/4" auto shut off valve


*If you purchased a Bulk Reef Supply RODI unit you do not need this kit as it is already included with the system.  You will only need to purchase a float valve to have the same functionality that this kit offers.


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  • This saved my floors By Rick on 11/8/2017

    I was over flowing buckets before this
  • Auto Shut Off Kit for Reverse Osmosis Systems By Mike on 10/13/2017

    The Auto Shut Off Kit for Reverse Osmosis Systems is working fantastically. It's part of my ATO system.
  • Nice product By John on 2/11/2017

    I really like the product. Like the other reefers it takes the work away from having to constantly check 32 gallon Brute can to see if its full. Many times i have forgot to turn it off before I went to bed and wasted a lot of water. When the auto shutoff kicks in it shakes all of the lines and your like what the heck was that. The other issue was it did not come with instructions. I had to go to the website and download them.
  • Best Backup Device EVER!!! By Forsaken77 on 1/23/2016

    I have a 43 gallon Brute can in my finished basement that I fill with plain RODI water. I usually set the alarm on my phone for 1 hour intervals to check it & shut it off.

    This one particular time I got side tracked and forgot to set the alarm and the unit was left running, and overflowing, all night long. We had 3 inches of water in 3 carpeted rooms!

    This baby is a lifesaver! I still use the alarm on my phone and this as a backup in case I forget to shut it down. I wouldn't rely solely on this unit to ahut the system down every time you make water. But it's a great backup device.

    I would recommend having your can or recepticle empty when you install the float switch because it requires drilling through the pail and you don't want debris in your water. Also, uae a 1/2" drill bit.

    This is something every RO unit should have on it. Super affordable price as well, considering the level of security it provides.
  • Marriage Saver By Joseph on 6/1/2015

    How did I not have this before?!?! This must be a required item for anyone purchasing a RODI unit. I don't even know how many times I flooded my fish room because I forgot to turn off the RODI. Set up once and forget it exists. Easy set up and no more floods. Well at least not for that reason. I'd say that BRS could include some basic installation instructions but videos can be found online.
  • Good Kit! By Jeff on 3/12/2015

    A good quality auto top off kit and easy to install. I can't count how many times I've had to turn the car around because I forgot to turn off my RO/DI. Also, BRS has a good installation how-to video if needed. Highly recommended!
  • Definitely Needed By Travis on 3/9/2015

    I went without an auto shut off kit for too long. This was quick to install, and I'm glad I can have some piece of mind when leaving my RO/DI unit running when not home.
  • Works very well - Great price! By StarFishMan on 2/27/2015

    This coupled with the pressure switch to turn of the pump when the float is triggered is simply ideal. And I am sure works without the pump as well but for me I needed the extra pressure. Can't wait to start making huge volumes of RO/DI water now!!
  • Quick delivery By Nnema on 2/14/2015

    Everything you need at BRS.
  • better By hans24hrs on 12/15/2014

    It works way better than other mass marketed one from pet store that have left my floor flooded.
  • You need this! By Terrie on 12/3/2014

    If you make your own water with an RO/DI you need this! Inexpensive and will save you a lot of headache and worry! I not only ran my bucket over once but maybe 2 or 3 times lol Finally decided to check these out and see what there was to remedy my problem and here I have this cheap little part that I can't live without! LOL
  • Perfect! By Rico on 8/13/2014

    I don't see how I ever made it this far. One flood and a second close call. This should be standard from day one. I will always have this!


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Product Questions

Hi I want an a float valve for my trash bin that I make my RODI water in, which product would you suggest I
get so that my RODI water does not over flow thanks Nick.
Question by: Nick on Jun 16, 2014 9:33:00 AM
Hey Nick,
This kit would be exactly what your looking for. The only extra consideration is making sure your system doesn't already have an auto shut off valve (as many do). If it happens to be that you have a system that has the shut off valve built in (like all of ours except the space saver) then all you would need is just the float valve itself.
Answer by: Bulk Reef Supply on Jun 16, 2014 9:33:00 AM
I have a Apex solenoid to turn ATO on 10 minutes every hour to replace evaporation. Sometimes I notice this valve tends to make a squeal as the float barely opens and closes in the sump. is this valve designed for the constant on/off of ATO replenishment? Or should I install a pressure bladder tank?
Question by: Matt on Jun 1, 2016 9:54:00 PM
Great question!
The Float Valve in conjunction with auto shut off and check valve (Other two items already built into the BRS RO/DI systems) will work to turn the water to the RO unit on and off as the float is lowered and raised. This will always keep the water at the same level and has some strain on the RO/DI as the water will constantly be turning on and off through out the day. A pressure tank can certainly work as well to store larger amounts of water on hand and not have the same strain on the RO membrane.
Answer by: Connor (Admin) on Jun 2, 2016 11:16:00 AM
I have a float valve on my water barrel and a pressure switch inline to shut the ro pump off, Do also need an auto shutoff on my system to? Thank you, Barry
Question by: Barry harris on Feb 8, 2014 3:09:00 AM
Hi Barry,
You would also want the auto shut off to turn off the RO/DI unit itself when the tank is full, otherwise you will just be running water down the drain!
Answer by: Bulk Reef Supply on Feb 8, 2014 3:09:00 AM
I have a BRS RODI system already, so I think I just need the shutoff valve. However, is there a way to set this up so I can install it on a my trashcan, and then disconnect this and the water line easily? I make the water in a back of the house bathroom then wheel it over to the tank.
Question by: Richard on Feb 8, 2016 8:56:00 AM
Great question!
You will want to install the float valve in the trash can. We recommend then using a John Guest 3 way ball valve which would be attached to the same product water line to divert the flow from either the trash can or to another area! This way you will not need to disconnect the line.
Answer by: Connor (Admin) on Feb 10, 2016 5:38:00 PM
I purchased the six stage RODI but I don't see any instruction on how to install the auto shut off. I'm new to this can someone help?
Question by: Money on May 23, 2016 8:51:00 PM
Great question! All our our BRS RO/RODI systems come with the auto shutoff valve pre-installed, all you will need to do to enable auto shutoff function is connect the product water line to a float valve.
Answer by: Carter (Admin) on May 25, 2016 3:57:00 PM
Should the shutoff valve be installed before or after the de-ionization stage? The video I found stated that it should go after the RO membrane on the clean water output, but that didn't seem to allow for the de-ionizer....
Question by: Keith on Oct 16, 2013 6:13:00 PM
Hey Keith,
That is correct, after the RO membrane and if you have a DI unit that would be before the DI canister. After going to the ASOV then the water would go on to the DI cartridge.
Answer by: Bulk Reef Supply on Oct 16, 2013 6:13:00 PM
Is this kit included with the deluxe reverse osmosis system?
Question by: mike on Sep 28, 2013 2:20:00 AM
Hey Mike,
If you ordered one of the 6 stage deluxe models then everything in this kit would already be included. Any of our other RO units would include everything except the float valve, so you would need just the float valve with the other units.
Answer by: Bulk Reef Supply on Sep 28, 2013 2:20:00 AM
How do you install this on a r/o system. There is no diretions
Question by: Dave on Mar 16, 2014 3:36:00 PM
Hey Dave,
The instructions for these are in video form and can be found right here:
Answer by: Bulk Reef Supply on Mar 16, 2014 3:36:00 PM
Would there be a way to install this so that water stops running though the whole system when my reservoir is full? On my system at home the water keeps running and I would like to set this up on a customers tank so that he can use it for both water changes and for ato with out using up his filter media too fast.
Question by: Parker on Apr 8, 2014 3:05:00 PM
Hi Parker,
If you have an auto shut off kit installed (not just a float valve) then water would stop running through the entire unit when the reservoir is full.
Answer by: Bulk Reef Supply on Apr 8, 2014 3:05:00 PM