I installed the American Standard dual flush 6/3 liter 4035 toilet just over a year ago. Ever since day one it hammers when the bowl is filled and it also sounds like another hammer when just after the small flush button is released not the large flush? Is this a case of design as no other toilets in the house makes such noise. Ps American Standard won't return my email.
Thanks
Sounds like a plumbing problem in the water supply. it's called Water Hammer. Google it.
I know it sound like water hammering, but why just this toilet and not the other ones in the house? Read all my post.
Different fill valves operate differently. You may have one that uses the water pressure to help close the valve quickly. The ones that slowly come to a stop won't cause the water hammer, but they too can have their own problems.
Or that toilet is on a different branch of the water supply line. Water hammer happens when the pipes bang against something, usually the wall studs. If the other branches are tight there may be no hammer.
One thing that might help is to drain the system, hoping that any hammer suppressors will also drain.
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