We are primarily grass cutters, not irrigation installers. For my own yard, I want to go ahead and use the downtime to install a small drip irrigation system. This system will be fairly basic, 300 feet of ½ inch hose, drip emitters and the ¼ inch feeders. My primary question is about the cross connect requirements. I calculated the water consumption, checked the pressure and plan to connect the system to my outside water faucet as needed (via a basic check valve, pressure reducer and water filter). The check valve is one of the $5 plastic orbit back flow preventers. In our area, all sprinkler systems need an approved, double check valve backflow setup, but they connect directly to the street main. What about a drip system that connects temporarily, via garden hose, to the existing outside water faucet? Thanks for the help!!