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How Do I Do a Dual Flush Conversion?

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  • Written By: T. L. Childree
  • Edited By: E. E. Hubbard
  • Last Modified Date: 03 November 2016
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A dual flush conversion allows you to conserve water by choosing different flush options for solids and liquids. In order to do a dual flush conversion on an existing toilet, you will need to turn off the water supply and disconnect the water hose. Next, remove the existing flush handle and replace it with the dual flush unit. Then, remove and discard the existing flush mechanisms and install the new components. After securing all of the new hardware, reconnect the supply hose and turn the water back on to complete the dual flush conversion.

In most cases, a dual flush conversion is a relatively simple, do-it-yourself project that requires a few basic hand tools such as pliers and wrenches. To begin the conversion process, turn off the water supply at the small valve below the toilet. Place a small container or towel beneath the work area to collect any water drips. Next, disconnect the water supply hose at the toilet tank using the appropriate-sized wrench. Carefully remove the water supply hose from the toilet tank and move it aside.

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Next, remove the top of the toilet tank to expose the flu handle and flusher valve. Remove and discard the existing flush handle from the toilet tank by loosening the large hex nut. An adjustable wrench can be used for this step if an appropriate-sized wrench is unavailable. Use caution when loosening this nut to avoid damaging the delicate porcelain tank material. Install the new dual flush conversion button according to the manufacturer’s directions.

Locate the existing flush-valve assembly and lift it out of the toilet tank. If the flush-valve is equipped with a ball-cock float, it must also be removed. Disconnect the small plastic fill-hose and remove it from the toilet tank. Next, locate and remove the toilet tank flapper and the attached chain. Install the new dual flush conversion valve and flapper assembly according to the manufacturer’s directions.

It is important to make certain that you have installed all of the new dual flush conversion hardware according to the manufacturer’s directions before reconnecting the water supply. Check all fittings, seals, hoses, and cables to ensure that they are positioned correctly. Then, carefully reconnect the water supply hose with the appropriate-sized wrench. Turn on the water supply to the new dual flush conversion valve and check for water leaks. Flush the toilet several times to ensure proper function and to release any trapped air in the system.

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hamje32
Post 2

@everetra - I think that makes sense. After all, look at what they do with airline toilets. We’re talking absolute minimum water used in those toilets!

I realize there are other reasons for that kind of rationing of toilet water on an airplane, but the point is that the technology works, so we might as well use it.

everetra
Post 1

Most people don’t think about their toilets when they want to conserve water. But it’s amazing how much water is wasted with each flush.

It’s hard to imagine that we might face a water shortage someday, but in our area we’ve already been through one as a result of a summer’s worth of drought.

If you install one of these kits you can conserve water and still have enough water to irrigate your lawns, which is probably where you would rather be using your water anyway.

I am thinking about getting one of these kits and have discovered that they are fairly inexpensive and easy to install.

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