Garden Poly Pipe is the generic term used for low density, low pressure poly pipe. This low pressure pipe is used to move water around the garden or turf areas to supply sprinklers, drippers & sprays. Low density garden poly pipe is usually black or brown to blend in with the soil. Note that low density poly pipe has a maximum operating pressure of 300 kPa and town main pressure will often exceed this. A pressure regulator must be installed to prevent pressure blow-outs.