An irrigation main line incorporates a pressure reducing valve, a double check valve assembly, a quick coupler valve, and a master valve housed within a valve box. Schedule 80 PVC unions connect the piping components, which are supported above a minimum twelve-inch depth of washed drain rock. A separate vertical pipe drop includes a gate valve serving as the main shut off. Installation conforms to city standards using either N.D.S. Pro Jumbo boxes or reinforced concrete boxes depending on device sizing.
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