Review on Efficient 2 Pack Stainless Steel Float Valve Shut-Off for Stable Watering - Ideal 🚰 for Horse, Cattle, Sheep, Pig, and Dog Water Troughs and Tanks – Perfect Farm Supplies by Robert Ryokan

You get what you pay for but with a little patience it's not too bad. Yes, the float fills up with water due to a design flaw, but that's an easy fix. The float is unscrewed from the valve. clean or drill a hole in the end and reassemble with a 5/16" ID O-ring. solves the problem. Instead of using a half roll of Teflon tape to secure the hose fitting, another O-ring comes to the rescue - 3/4" diameter , to be precise, makes it waterproof. And one of my two didn't work at all until I realized the water drain was filled with plastic shavings and needed to be re-drilled. But for only $4.50 each and for a compact size, they get the job done perfectly.