Busted backyard sprinkler pipe

We heard running water last night outside my office window, the sound like when the sprinklers are running, but the sprinklers were off so I went out to investigate. I traced the sound to the back lawn where I found water rapidly bubbling up out of a spot in the grass. It was the general area where I had repaired two broken pipes eight years ago. I shut off the valve to the water line that runs back there and this morning went out and dug up that whole area. Once I got down to the pipes and cleaned them off enough so that I could get a decent view I discovered that one of the union connectors I had used in my previous repair was cracked. So I had to take a trip to Lowe's. I looked at various options but eventually bought the same union connector as before. It was one of those expansion ones with adjustable length slide-action. Only the non-sliding side of mine was broken but they didn't sell just one side so I had to get the whole thing. I also had to get a simple union connector so that I could make the pipe longer to account for having to cut off the old cracked part. By the time I got home and got the pipe cut it was getting too dark to do any gluing so I'll have to do that tomorrow.