Question 1

How do you operate this? Does it have a liytle lever on the back? What if i dont want wny more water? What if i want water on demand?

Accepted Answer

We love ours and it took just minutes to install. 
No lever... when u flush water will start to flow form faucet. 
We use ours out in the Mancave all the time.

Question 2

What are the dimensions for the dual flush button placement? will it fit the next dual flush repair/conversion kit? they say their button is 2 i in di

Accepted Answer

I custom make them... the American Standard is a rectangular button (I know the size and make consistent with that).  The other two most popular ones are the Water Ridge (Costco), and the Glacier Bay Dual Flush (Home Depot).,  Water requires us to drill a 2.5" hole for your button.  The Glacier Bay requires us to do some sanding and to drill a 2" hole.  If you have a different model, we'd better coordinate further based on dimensions you send me of your tank and button.  I'm happy to work with you.

Question 3

how does fill cycle diversion work? Does the water not go into the bowl directly? (where the water ends in the first place?) what causes water savings

Accepted Answer

Fill Cycle Diversion is a bit hard to explain, but it has to do with changing the ratio of water that is allowed into the bowl vs. the tank.  American toilets put a lot more water in the bowl than they need to put into the bowl.  Sink Twice trims back about 40% of the water that would normally go into the bowl and redirects it to help fill the tank (before it goes to the bowl).  Because the tank fills up more quickly, the entire fill cycle shortens (because the float triggers off earlier), typically saving .3 gallons to 1 gallon per flush (depending on the toilet).  Fill cycle diversion is one of the three ways that Sink Twice saves water.  Others are leak detection and water reuse.  It does a lot more to save water than meets the eye. Keep in mind that a few toilets (like the American Standard Dual Flush) already have highly engineered fill cycle diversion (they charge an extra $100 for that toilet probably because of how they over-engineered that very important function).

Question 4

Where do you find the water ridge duel flush toilet to go with this...because costco does not list them on line ?

Accepted Answer

That's a great question... I think they may have moved on to a different model now... The reality is that the dual flush toilets probably weren't ready for show time in the USA... My personal recommendation is to stick with the 1.28 GPF toilets until the technology gets better for the dual flush toilets.  We now have three models of lids.  I would take a serious look at our new model called "Sink Again."  Everyone loves it and it really makes older toilets very efficient.  If you do get a dual flush, please make sure to coordinate with me, because the button sizes are different.  You can get the Glacier Bay Dual flush at Home Depot, which is a good fit for our basic Sink Twice model (as modified).

ASIN	B01EXQ6UXC
Best Sellers Rank	#2,333,072 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #184 in Bathroom Console Sinks
Brand	SinkTwice
Brand Name	SinkTwice
Color	White
Customer Reviews	4.1 out of 5 stars 6 Reviews
Installation Method	Self installed in 10 minutes
Installation Type	Self installed in 10 minutes
Item Weight	2.5 pounds
Manufacturer	Sink Twice LLC
Manufacturer Part Number	3343 Dual Flush
Material	ABS Compressed at 400 tons
Material Type	ABS Compressed at 400 tons
Model Number	WRBDUALSS1
Seat Material	Acrylonitrile Butadiene Styrene (ABS)
Seat Material Type	Acrylonitrile Butadiene Styrene (ABS)
UPC	691054985193
Unit Count	16 Ounce

Sink Twice modified to function with Bemis and Water Ridge Top Button Dual Flush

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