The Tunze RO Water Controller 8555 is used to regulate the water level in your fresh water storage container. It uses two float switches to control an electronic valve. When the water level drops below the first float switch, the valve is opened allowing the container to fill until it reaches the second float switch and the valve turns off. The Tunze RO Water Controller 8555 also features a timer backup that can be set to either 12 or 24 hours. If the float switch hasn’t been triggered off within the set time the valve will close and an alarm will be activated.
Item #: 8555.000
I like the Product By Greg on 4/2/2017Greg would recommend this product to a friendI do not use a reservoir to top off my sump so this system works great with my RO/DI system which I use to top off my sump. It took a little time to configure the rails to work properly in my sump, I needed to connect both rails together to make them long enough. The system works great no problems. Should have bought it 2 years ago.
Float sticks, flooding By Ted on 3/12/2017Ted wouldn't recommend this product to a friendOn several occasions the upper float valve (shut off) has stuck and caused the fresh water reservoir to overflow onto the floor.
good product By mike on 3/1/2015mike would recommend this product to a friendI replaced my failed unit that had a vacuum type trigger that suction cupped on to the side of the tank with this unit. I like the floats better but the railing system is cheesey. I had to retrofit some things to make it work, so it took a little more time to get it in and then adjusting it was a little tough. But all in all it was the best one out of all the ones I saw.
Excellent By T on 11/28/2014T would recommend this product to a friendWell built great product to control water supply line to your reserve top off tank. Have a separate system that taps reserve water to sump ATO
Good but By CalgaryGuy on 2/10/2014CalgaryGuy would recommend this product to a friendThe product is pretty sturdy and clamps closed if it loses power. It takes away the 'did I shut it off?' panic attacks at four in the morning or on your way to work.
My only issue is that it does not come with the magnetic holders for the sensors like the ATO units do. It comes with rails to mount the sensor but unless you have a perfectly flat side with access to hang the rail they don't work.
I wish they'd kept the cheapo rails and included the magnetic holders instead.
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The default position of the solenoid is closed to prevent issues. Feel free to let us know if you have any further questions!