Amazon.com: Auto Water Level Control Valve, Flow Control Automatic Pool Water Leveler, Adjustable Built-in Water Level Float Valve, Pool Tank Automatically Water Supplement Refill Water Level Controller (1in) : Patio, Lawn &
Stetson Swimming Pool Pond Spa Water Leveler PVC Auto Fill 3/8" Float Valve | eBay
Pentair In-Floor (A&A) Quik Water Leveler Float Assembly w/ Restrictor Seal 542486 529342
automatic pool and spa water level devices
Pool Water Leveler PVC Auto Fill Float Valve Repair & Installation - YouTube