Amazon.com: Float Valve for Water Tank Stainless Steel Float Ball Valve 3/4 Inch DN20 Floating Ball Valve Switch Automatic Brass Toilet Valve Float Valves for Stock Tank Pool Water Level Control (2) :
What is Float Valve or Ball Valve?
Dial Brass, Plastic Evaporative Cooler Float Valve in the Evaporative Cooler Accessories department at Lowes.com
34-401SA EVAPCO 2" Brass Float Valve and Ball Assembly