Modern toilets often come with two separate flush buttons—one large and one small. While most people use them daily, not everyone knows the actual engineering and environmental reasons behind this dual-flush system. This blog post explains why these two buttons exist, how they work, and how they help save water on a global scale. 1. What Do the Two Buttons Actually Do? A dual-flush toilet has: Small Button – releases a half flush , typically using 3 liters or less Large Button – triggers a full flush , usually 6 liters or more Instead of a single, fixed amount of water per flush, the dual-flush design offers choice —allowing users to use only the amount needed. 2. The Engineering Behind Dual Flush Technology The system works on a simple principle: The small button partially opens the flush valve, releasing less water. The large button opens it fully, allowing maximum water flow. This intelligent valve design improves efficiency, reduces tank refill time, and...