On 1/30/2013 1:28 PM, NamPhong wrote:
Fairly certain have the correct answer but thought to run it past this
group for a sanity check.
When one toilet, and only one toilet, is flushed I get a water hammer
through the ice maker connection to the fridge (all pipes have been
checked and are not loose). Do not get any hammer when other toilets are
flushed and cannot recreate the hammer by shutting off the water rapidly
at any other water outlet.
Is there any adjustment to slow down the closing of the fill valve (new
style with vertical float)in the toilet?
Is best solution to just change the fill valve.
Thanks for the assist.
What changed just before this started happening?

One thing that might help and is easy to try.
Turn off the main water.
Hook an air compressor to a spigot.
Open all the valves in the house, one at a time until air comes out.
Any hammer-prevention devices should be refilled with air.
You can do the same thing by draining the system, depending on the
layout of the pipes.