Sprinkler tune-up - recommendations?

[TexasVines]

actually a break in the pipe would be much easier to fix with a compression coupling

you cut out a piece of the damaged pipe you slip all the parts of the coupling on and then you screw the ends down tight so that the rubber gaskets on each end compresses against the original pipe and the seal is made

[Primo]

I do all my own sprinkler system work myself. I would say all the pop-up heads need to be replaced every 10 years. They just wear out, start to leak and lose pressure. Something else I did....I notice there was a lot of mud in my pipes as I replaced the heads...so I figured out the furthest head..removed it...screwed in a flexible pipe and ran the system to flush out all the mud/pebbles onto the sidewalk. The whole system ran like a champ after that.

[TexasRedneck]

TexasVines - that's also called a "dresser coupling", and there's NO way I'll use one - especially on a sprinkler system. Problem being that the constant shock of pressure on/pressure off creates water hammer in the system - which, over time, often causes the pipe to work its' way free. If I've got room for one of them, I've got plenty of room for a glued coupling (or even a union)...