I have a garden timer connected to a pressure regulator, anti-siphon, swivel adapter, and 1/2 inch drip line. Water sprays out of the connection to the drip line. I bought everything at Lowe's so I would think they should be compatible, but perhaps that's assuming too much. The connection is tight enough that I couldn't pull the drip line out of the connector. Is that just a bad connector to use?

I've looked for a universal type non-swivel connector on the internet, but so far I have just found ones that connect to a hose. I've also learned there is a difference between hose threads and pipe threads so I need something that connects to pipe threads. Anybody know a good place to find one? Or a set of pieces you know works together?