I bought this valve to replace a much more expensive fill valve that was very unreliable. The other valve cost 4X as much as this one and was very unreliable causing flooding in my yard several times. This valve has worked flawlessly since installation. It is very easy to adjust fill level and has not needed removal and cleaning. This one is a keeper!
I needed a valve to work like the one in a toilet, and this was it! Now my pond stays at the correct level year round. I mounted mine inside the skimmer box.