Float valve questions

[Serin]

Hi, I want to set up an ageing barrel, and the only spot I have is in a crawlspace, so I need to automate it a bit. I don’t want to sit down there waiting for it to fill.
What kind of float valve/solenoid/whatever can I use that attaches to a garden hose from the tap, that will fill the barrel and turn off before it reaches the top.
I don’t know anything about these things, and the only ones I can find are electric that controls a pump, but I want to control water from a tap. I’m fairly ignorant about these things, so please explain in simple terms and include links if you have them! Thanks in advance!

[Serin]

So, after some more research, I see there are livestock trough float valve like this:



and a hanging kind like this:

o

Are these what people use? Which one is a better idea?
I would have to turn the water on manually, but could then walk away and the valve would shut it off (but I would have to remember to turn off the tap again before the next water change). Seems simple, what am I missing?
I am planning on an overflow, as well, for insurance.

[Vanman]

I am planning on a valve like this when I eventually get a large water aging tank. My plan is to use two in series as a safety measure.
This is the one I am looking at: https://www.amazon.com/dp/B0891SPCRL...lig_dp_it&th=1

[Serin]

My plan is to use two in series as a safety measure.

Good idea!

[Vanman]

The first one will be at a lower level than the second one. If the water ever rises to the higher level I will know the first valve has failed. I will probably need to test the second valve a couple times a year. An overflow higher than the second valve would be a great idea.

[Charlyc11]

I have this one in my water room, that's were I keep my 30 breeder tank. I can walk away from this one with no issues. I intend to use these on my large tanks eventually but it's had to do in my acrylic tanks they leave very little room with the filters, overflow and porthos.

[Vanman]

Got a link for that one, Chuck?

[Charlyc11]

I go on Amazon and it has a screen that needs to be cleaned once in a while that's the orange ring on top of the thread.
Float Valve Link

[Vanman]

Thanks

[Serin]

The first one will be at a lower level than the second one. If the water ever rises to the higher level I will know the first valve has failed. I will probably need to test the second valve a couple times a year. An overflow higher than the second valve would be a great idea.

If you attach them to each other in series, how will you get them at different levels?

[Vanman]

The one I linked to has a threaded connection on the input as well as the output. Use female adapters and a couple 90 degree fittings between the two valves. The first valve needs to be above the second one. It will normally never close. The second valve will stop the flow of water until it fails allowing the water to rise until the first valve shuts it off. You will probably need a 90 on the second valve to direct the water downward.

An overflow to a drain or at least a high water alarm would be a good idea.
Hope this helps you visualize the setup I am thinking of doing.

I want to do this so I can turn on the water to fill the aging tank and not have to stay there until it is filled. Just have to turn it off before starting to refill tanks during a WC. This would cut my WC time drastically.

[Serin]

This is exactly what I want to do. Thanks for the explanationVanman.