European Type Toilet Flush Valve, Penguin Toilet Flush Valve, 3 inch, One Piece Toilet, with button control for side of Toilet Tank by NuFlush - Walmart.com
3 inch Dual Flush Valve Replacement for One Piece Toilet Repair Kit Parts Tank Drain (3.18”-3.5”),A2201 - - Amazon.com
The Best Toilet Flush Valve Options of 2022 - Top Picks by Bob Vila