Troubleshooting and Maintenance Guide for （故障排除和维护指南）.pdf

Troubleshooting and Maintenance Guide for Residential Automatic Valves 1 Controller Supply Line Valve Box Controller Sprinklers Zone BASIC AUTOMATIC Valve Water Flow IRRIGATION SYSTEM Shut off Supply Line COMPONENTS Valve DIAGRAM Water Flow Sprinklers Zone Valve Water Flow Valves are an essential part of any sprinkler system. They are the link between the brains of the system (the controller) and the sprinkler heads, to turn the water on and off. Most automatic sprinkler systems are set up with two types of valves. A brass gate valve or ball valve is usually located right after the tee where the sprinkler system cuts off from the main source of water to the house. This valve, referred to as the shutoff valve, is used to shut down the sprinkler system for repairs or winterizing without shutting off the water to the entire house. It is rec- ommended that all systems be equipped with a shutoff valve installed in a box for easy access. Some systems also require the use of a back-flow preventer. Check local building codes.