Craig wrote:

Gary Slusser wrote:
No, Clack is best and Fleck is next with Autotrol following. Many Fleck
residential valves require special control valve specific tools to work
on them so the cost to maintain them will be higher.

I've come across some posts about the autotrol tends to be noiser than
the clack/fleck models. Is this noise from the flapper (it'll be in
the garage so if its just this then I'll probably not hear it), or does
it affect the water pipes running through the house. I saw one post
about decreasing from 1" to 3/4" that may cause the noise but since I'm
staying with 1" I don't think that'll be a problem unless I'm missing
something else that could cause noise. Tomorrow I'm going to look in
the phone book for dealers around me that install/service clack/fleck
models.

tia,
Craig

In some cases their flapper valves design causes water hammer.

You'd do much better buying over the internet from a guy like me and
installing it yourself or hiring a plumber or handyman to install it.

Gary
Quality Water Associates