[lozsing]

I am setting up a static tank, any ideas on how I can stop the water flowing when tank is full say its in the middle of the night . I want to be able to stop it so i am not working the RO for nothing

[Ian Lancaster]

You can buy a float switch which will shut off an electric supply when the tank is full.  If you wire it up to a solenoid valve on your incoming water supply, turning off the power will close the valve and shut off the water.

I use a solenoid valve, but I just control it with a simple timer, set to switch off when the tank is full.  I ran the RO for a couple of hours then measured the product and drew up a scale to show how many hours I need to run to fill from any given level.  This time also controls my booster pump.

[Moderator David@stives]

I have a float switch at the top of the tank, when the water rises, the float is raised which in turns breaks the circuit, which in turn, switches off the solenoid valve.

I guess, without a water flow the booster pump should also switch itself off, I am just guessing on this part, I know nothing about booster pumps

[Ian Lancaster]

It does.  But it's still safer to isolate the pump.

[lozsing]

Where did you get your solenoid valve from .Please

[Ian Lancaster]

I Googled "Solenoid Valve"

[Window Washers]

It does.  But it's still safer to isolate the pump.

not all pumps will shut off when water stops, found that out the hard way.

a vale that shuts off electric when water is full sounds good then inturn shuts water off.

Anyone know where all these parts would come from, or long shot does anyone have a diagram and instructions on how to do this ??

[lozsing]

I googled Solenoid Valves but got a load a washing machine Solenoid Valves.

[Ian Lancaster]

Ian:

Do it the way I do - seemples

Despite what some say about the difference between winter and summer production, I've never found it varies that much.

First mark your holding tank with the current water level.  Then run your RO for a timed period (preferrably in multiples of 1 hour). Measure from the first mark to the new level and divide by the number of hours run - this give you the hourly production figure.  Mark a grid on you tank in hours.  Now you can see at a glance how long you need to run to fill up.

Buy a timer switch that allows you to set it to just 'switch off' (Not a recycling on-off type)  and a 2-way adapter.

Fit a solenoid valve in your incoming water supply line (I just googled "solenoid valve" and did a bit of research - can't remember where I got it now)

Plug both the pump and the solenoid valve into the 2-way adapter and plug that into the timer.

Set your timer for the necessary number of hours to fill and switch it on. When the tank is full (ie the timer reaches  the end of the period) it switches off.

Works for me.

Been doing this for years - so far foolproof

[Ian Lancaster]

I googled Solenoid Valves but got a load a washing machine Solenoid Valves.

Try again - they're out there

You may even be able to use a washing machine one - they're 240 volt.