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Old 01-27-10, 04:39 AM   #1
Piwoslaw
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Default Super Ultra Low flush toilets

The nomenclature is that an ultralow flush toilet uses 1.6 gallons (6 liters) per flush. This is now the standard, with dualflush toilets using 3l/6l (0.8gal/1.6gal) to do their respective things. I recently read that urinals can use as little as 1 liter per flush.

We plan to renovate our bathrooms this summer, so I'm looking for watersaving devices before Dad-in-law goes and buys whatever is cheapest (and not very eco). I can't find anything on the Polish Internet, and all toilets in the store are either 3/6 liter duals, or 6 liter stop-on-demand. My Grandma has the latter and they don't always stop when they should, so I'm wary of those. The thing is that 6 liter models don't always finish their task in one flush. On the other hand, I noticed years ago that filling a bucket with 4-5 liters of water and quickly pouring it into the toilet works better than regular flushing with 6l. This may be because the water in the bucket method goes directly and doesn't lose energy in the nooks and crannies of a bowl's plumbing.

This brings up two questions:
  1. Can this be improved on? Are there toilets on the market that use less than 6 liters (1.6 gallons) per "big flush"?
  2. Can a regular toilet be made to use less than 3 liters (0.8 gallons) per "small flush"?

Putting a bottle in the reservoir to reduce its volume works well in large tanks, but not much in the 6l models. I tried reducing the volume by 0.5 liters, but that seemed to mess up the flushing mechanism (even though it didn't touch anything). Maybe it was just that individual model's fault.

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Old 03-29-10, 07:16 PM   #2
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a little late to this party, but i just installed a Kohler "wellworth" model.... 1.28 gallons/flush and it'll suck your arm(or any other appendage) off on the first try.....it was <$400USD at Lowe's..
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Old 03-29-10, 08:13 PM   #3
Ryland
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I like my dual flush, I just use the small flush 90% of the time and it works well, on holidays you might need the big flush but so far the small flush has worked well for most solids.
Cost was around $210 USD if I remember correctly.
one toilet that I really liked filled a trough with water and the tank was funnel shaped, hit the lever and it dumped all the water, advantage of this was there was no tank valve to fail!

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