Did you know that if you are not careful, converting a single flush system to a dual flush system could actually waste more water? Using our optimal installation guide, we show you how to measure your water so that you can save the most water. We spent a lot of time on the adjustment because if each person flushes 6 times daily, that is 2000 flushes a year per person.
The installation instructions from the manufacturer aren’t the best. First, it didn’t discuss how to adjust the blue clamp on the refill valve. Second, adjustment for the half flush from this manufacturer may require you to waste too much water before finding the right point on the dial. We provide the optimal Golden Section solution to waste a minimal amount of water while testing.
If you decide to purchase the real dual flush kit, here are couple of links for the products:
for Fluidmaster DUOFLUSH Fluidmaster DUOFLUSH
for Danco Dual Flush: Dual Flush by Danco at Amazon
People who are accustomed to the single flush system may accidentally push the lever down when they intended to half flush. Since liquid waste is more frequent than solid waste, pushing down the lever by mistake would cause more water waste. In this video we provide one simple solution to swap the half dial and the full dial.
Index
0:00 fluidmaster duo flush overview
0:20 Fluidmaster conversion kit
0:43 Danco vs Fluidmaster 3 differences
1:58 setting dial at max to begin may not be optimal
2:20 starting from 5 may not be optimal either
2:40 starting from 0.618 is optimal
3:03 optimal Golden Section
4:15 installation demo step 1
4:35 step 2: mark these 3 water levels
5:15 step 3, 4, 5 and 6 remove and clean
5:36 step 7: install angled seat adapter
6:03 step 8: align & push flush valve onto seat
6:23 step 9: install handle
6:59 step 11: adjust half flush
7:40 duoflush may use more water than single valve?
8:18 if flushed sucessfully vs unsucessfully (Golden Section/Ratio)
9:42 four factors contribute to flushing less water
10:07 syphoning effect
10:59 full flush test
11:56 our results
12:29 swap dials half flush<=>full flush & up<=>lever
13:23 install refill valve
12:58 usage: 3 or more flush system
13:59 two ways to adjust refill valve float
14:39 adjust blue clamp
15:51 Golden section 0.618 method
16:21 collect water for more info
Since different viewers may have different questions in mind, here are the timestamps so that you can click and skip to the sections you’re interested in:
The Golden Section algorithm description:
https://youtu.be/m6C1YULrPCU?t=126
Swapping the half dial and the full dial:
https://youtu.be/m6C1YULrPCU?t=749
Duoflush installation:
https://youtu.be/m6C1YULrPCU?t=255
Flush valve dial adjustment:
https://youtu.be/m6C1YULrPCU?t=413
What to do if the dial adjustment is out of range:
https://youtu.be/m6C1YULrPCU?t=525
Refill Valve installation:
https://youtu.be/m6C1YULrPCU?t=805
The blue clamp on the refill valve adjustment:
https://youtu.be/m6C1YULrPCU?t=879
If you have the “dual flush” system from Danco, you can watch this video:
Save Water: Convert Toilet into Dual Flush, Best Install, Explanation & Tips
https://youtu.be/1RDGznJm-U8
A few toilet or plumbing related issues can be found below:
5 Different Ways To Make Your Toilet Use Less Water
https://youtu.be/CtSzDN6ann8
Toilet siphon effect, when plunger, auger and snake fail:
https://youtu.be/_EP7LZdnMXo
Big Mystery of the Adjustable Toilet Flapper Solved
https://youtu.be/BDy9d_B6xRM
5 Ways To Unclog Toilet Using A Garden Hose
https://youtu.be/l91Uqb1iRLg
How To Unclog Bathroom Sink
https://youtu.be/em8erX6yA9s
How To Unclog Kitchen Sink
https://youtu.be/JgBu1WK5DdI
