Apparently I have some air in one and only section of my sprinklers.
They heads bob up and down and there is a horrendous noise throughout
the house from the water hammer. Only one section is impacted. Any
suggestions for fixing the problems?
Why wouldn't the air just leave anyway through normal operation? Most
sprinkler systems have some air in them and it all comes out each time
they start up.
Is this only a temporary problem during start-up of that zone or are
you saying it's continuous? If it's continuous, it sounds more like
some kind of problem with the control valve on that zone to me.
Iff'n it were my system, I'd do all the zones. Besides getting air out
of the system, you'll flush out any accumulated debris that might later
clog sprinkler heads.
When clients ask me to fix a problem where one piece of a system is
causing a problem, I suggest doing all the pieces as preventive
maintenance. For example, if they want one water heater flushed, I
suggest we do both (in a two-WH house).
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