In article ,
"Backlash" wrote:

steamer, what type of sprinkler system do you have?
....
These have a thermal link that melts at the
prescribed temp, the stops fly out, and there's no stopping it short of
cutting off water supply.

Actually, there's a tool head on a pole that can be put into the
sprinkler which will stop the sprinkler head. Don't know what it's
called - it mates to the same places the thermal link mates. You'd still
need to shut off the supply to replace the link, but there is an
in-between stoppage method. I expect you'd want one if you have
sprinklers.

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