meekoo Float Ball Valve, 1/2 Inch Male Straight Thread Automatic Fill Feed Humidifier Tank Water with Adjustable Arm for Pond Livestock Water Trough Aquarium Aquaculture Hydroponics Reservoir(10 Pack)

Works fine on water tank.

works fine although I did goop the adjustment so to prevent loosening

These things are plastic and therefore are easy to break. In the past I would have to turn off the water supply and keep the pool filled by hand until I could get to the pool supply and buy another one. These came in a 4 pack so if one gets broken li have to do is take out another one and screw it into the supply pipe and we're up and running again. Perfect size and when I installed it the pool was full and it didn't leak. Now there's a steady trickle keeping the pool full.

These valves are pretty easy to adapt to most buckets, drill a hole use some caulk to seal it in, then use a compression female 1/2 NPS adapter to get a leak free connection (note should not be using tape or dope on the threads they are straight. Keep in mind while they have a fairly large connection at 1/2 the flow rate is quite low in comparison. These are meant to top things off but to get a decent GPM out of them you may need to connect two or more with a Y. Have had a few damaged where the float gets hit and snapped but not much to do about that.