why is there an occassional sound from the dual flush system?

Not sure what's making the noise but check my tips in case the noise is from a slow leak that might suggest needing to replace another part besides the flusher:See my review, ( http://www.amazon.com/HYR270-HydroRight-Drop-Flush-Converter/product-reviews/B002NKRR7Y/ref=cm_cr_pr_btm_link_next_4?ie=UTF8&pageNumber=4&showViewpoints=0&sortBy=bySubmissionDateDescending ) "Works great; but some toilets might need their Fill Valve also. Read my tips., November 26, 2013" and also my response to a negative reviewer, "Roc1 says: Readers, you should take this reviewer's disparaging remarks about the quality of the blue dome gasket with a grain of salt. ..." of Dec 3, 2013 7:35:34 AM PST".

Tank does not fill while toilet keeps running continuously. Blue gasket seal looks just fine. What am I doing wrong?

Reposition the assembly over the fill tube valve seat and use the neoprene washer on the fill tube to hold it place. Check out you tube video on how to install.

how high does the assembly stand above the tank floor?

I have installed 3 of these, and will not go back to the old flapper flush valve. I measured one of mine, and it stands just over 11 inches from the bottom of the tank, about an inch or so lower than my existing fill valve. Installation is extremely simple, and I have installed in tanks with both front and side flush handle sitings.

Will this work with tanks that doesn't have overflow tube?

No, if there is no overflow tube, it can't be mounted or at least without engineering some way to secure it. The whole device would float.

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💧 Upgrade your flush, save the planet—one button at a time!

BUILT TO LAST - Chlorine-resistant metal construction that won’t warp or degrade
EFFORTLESS UPGRADE - No tools, no tank removal—install in minutes and join the eco-savvy crowd
RELIABLE PERFORMANCE - Eliminates flapper, chain & handle issues for hassle-free flushing
WATER WISE DUAL FLUSH - Slash water use with smart liquid vs. solid flush options
UNIVERSAL FIT ALMOST - Fits standard 2-1/2 inch flush valves, compatible with most toilets except Mansfield

The Danco Next HYR270 Hydroright Dual Flush Valve converts standard toilets into efficient dual flush systems, saving over 15,000 gallons of water annually. Designed for easy, tool-free drop-in installation without tank removal, it replaces common faulty parts like flappers and chains. Compatible with most 1.6 to 3.5+ gpf toilets (excluding Mansfield), it features durable, chlorine-resistant metal construction for long-lasting performance.

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Manufacturer	Next by Danco
Part number	HYR270
Item Weight	408 g
Product Dimensions	10.16 x 7.62 x 26.67 cm; 408.23 g
Item model number	HYR270
Size	1 Pack
Color	Chrome
Style	Toilet Flush Valve
Material	Metal
Item Package Quantity	1
Number of Handles	1
Specification met	EPA, WaterSense
Included components	Building Materials & Ladders;Other Material Handling;hydraulic-valves
Batteries Included?	No
Batteries Required?	No

DancoNext HYR270 Hydroright Water-Saving Dual Flush Valve with Push-Button Handle

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