Installation of the float valve depends on the type you purchase. There are basically two types. One just resides at your water storage container and shuts the flow of water off at the float when the float rises up to indicate your container is full of water, it depends on an automatic shut off (ASO) device already installed on nearly all RO filters The other type of float switch actually controls an electronic valve (shut off valve) which shuts off the water flow either going into or out of the RO filter, this depends on where you install the electronic valve, and it is more dependaple than the factory ASO, which will often allow water to continue to flow to the drain even when the filters outlet is closed. One obviously requirs electricity and the other does not. A lot of people use both (I use three different valves to include a pressure cutoff valve). The principal valve being the one not requiring electricity and the backup being the one requiring electricity which is set up to shut the entire filter off if the first valve fails to stop the water flow from your filter. The sites such as waterfiltersonline.com usually have on their sites directions for installation of all their controllers, switches etc., they are prewired plug and play units requiring little more than cutting your plastic tubing to splice in the valve(s). Even if the site does not have online directions they furnish them with purchase. They even have valves that shut water off when any water is detected on your floor. or in your cabinet etc.
The saying is, "Even Biffer could do it."
