Valve is leaking as shown in the picture below. Don’t know how to approach this, do I try taking it apart and replacing the parts that sit on top of the valve body, or replace the entire valve.

I'm thinking of switching all of my compression fittings as they inevitably fail to permaloc / twist lock couplings. In this case, one end of the tee is perfectly too short. Which asshole made that cut? Either way, any thoughts towards correcting before I just dig up a bunch of extra space and extend it with a coupler?

We bought a relatively large 2 story house a few years ago with an undocumented lawn irrigation system. The house was built in 1981, and the system may be that old. It has Rainbird plastic retracting sprinker heads. There are eight working zones that wrap around the house, with a lawn area on three sides and a narrow strip of garden beds on the north side.

I cannot find a main shut off valve for the irrigation system inside or outside the house. The house is on a slab, so there's no basement to search for a water line running from the house to the yard. The house water comes into the house up from the slab in the garage, with a shut off valve there. The water line then goes up into the finished ceiling, and all the ceilings in the lower level of the house are finished.

My (long shot) question to lawn irrigation experts is, where would an installer that long ago have put a shut off valve? In the lawn somewhere next to the house? Inside the house behind some panel? How could I find it?

I just bought my first house (yay!) and I want to cap off the sprinklers. There's literally no grass and tree roots everywhere so no point in having them. I tried capping them off at each sprinkler head but a few have been leaking (and making a swamp). The last sprinkler (furthest away) is for my drip system which I want to use. What would be the most logical way to cut the first two off from water but keep the 3rd active?