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Do you Know why toilet flush has one big and one small button?

Wondering why the toilet flush has two buttons? Resolve your query in this section!

Toilet Flush button

The toilet flush has two buttons, Why? These Modern day toilets come with two types of flushes, one is smaller and the other one is larger. They are called ‘dual flush’ toilets but you ever thought why you are given this type of option? Well, we will tell you the reason why it is so!

The concept of dual flush

Flush toilet

As mentioned above, the present-day double flush toilets have the large and the small levers or buttons. And each is connected to its own exit valve.

The main reason – Water conservation

Water conservation

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The larger button is there to flush out around 6 to 9 liters of water, whereas the smaller lever is to flush out around 3 to 4.5 liters of water. That clearly means, the larger lever is to flush the solid waste and the smaller one is to flush liquid waste.

How much water do you save?

Water conservation

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A calculation is made, according to which if a household chooses to take up the practice of dual flushing, it can save up to  20,000 liters of water in a year as compared to single flushes. Though the installation may cost a little more than the normal flush. But, it’s eco-friendly and gives you relaxation on the water bills.


Toilet flush

The concept of dual flush is the innovation of  American industrial designer Victor Papanek, suggested by him in his book ‘Design for the real world’ in 1976. It was first implemented in Australia in 1980.

Get smarter

Small flush button

So, the next time you use the toilet, flush it down as per your need. If you go for urination, prefer the smaller circle or a small button, indicating that it is the small flush. While, if you’re going to take a dump, only then you must press the larger lever, which will be bigger in size.

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Large Toilet flush
Jagriti Goswami
the authorJagriti Goswami
An ethusiastic writer, a creative thinker, blogger by interest. My leisure pursuit revolves around gaining more and more knowledge. Being innov@tive is my hobby!