American Standard Dual Flush Toilet Valve Replacements Adjustable Fill Valve (7-14 inches height) Flush Valve for 2 inch flush hole, Two Piece Toilets Dual Flush Valve for 1/2 and full Power Flushes Comes with 1/2" to 7/8" Adapter to fit either size toilet! American Standard Dual Flush Toilet Valve Replacement (2 inch Two Piece) & Adjustable Fill Valve by NuFlush. Adjustable Fill Valve (7-14 inches height). Flush Valve for 2 inch flush hole, Two Piece Toilets. Dual Flush Valve for 1/2 and full Power Flushes. Kit comes with replacement gasket, nylon bolts, and 7/8" adapter.