Since water expands as it freezes, draining the system before cold weather strikes ensures that the pipes won't burst. You didn't specify that the pressure in the line should NEVER exceed 50psi. Look for the screws holding them in place and unscrew them with a screwdriver. Emitters can also be installed at low points to assist with draining. Should I do each head or just the furthest one. Turn off your water at the dedicated Sprinkler Line Shutoff (A) in your basement / crawlspace. When you blow the system out, the heads should stay UP for the entire 5 min. Protocols that describe specific steps for pre-testing wet and dry sprinkler systems before flushing begin with an inspection of the exterior system parts: the pipe, hangers, and sprinkler heads. If you have a more elaborate irrigation system, find a suitable blow-out point such as … Keep your system clean and clear of clogs by flushing it with water at least 3 times a season. How to Flush Out a Drip Irrigation System. We would flush 2,500 feet of pipe for a minimum of 9 minutes. This can be a significant difficulty, which may prevent you from getting your plants properly fed and watered. Another common method is to blow out the lines using compressed air. What is the best way to flush out a sprinkler system. During our flushing procedures we add a safety factor of 2. Flush the Sprinkler System. To flush the lines with water, plug all of the emitters, which are the holes in the tubing, so the water can’t escape through them. Otherwise, debris will breach the system and block the nozzles. Then, turn on the water to force it through the line to clear it. Draining a little water may not be enough to prevent pipe rupture. I am replacing my valves and want a clean start. Flush valves will open every time the system shuts off, draining water trapped in the line. The next action is to flush the pipes to find, identify, and clear foreign materials. Within your sprinkler system, there are a set of valves that controls each sprinkler line. That compressor cannot produce enough air to properly flush the lines. Any segment of pipe less than 300 feet will be flushed for a minimum of 1 minute. You are not doing a proper blow out. Locate the Origin of the Line. In order to correct this problem, you will need to unclog the pipe using natural agents. Make sure you flush the system at the beginning of the season. Make sure to have a bucket available for water drainage. 2. A garden sprinkler system makes maintaining a yard much easier, but you do have to take care to drain them of any remaining water come late fall if you live in an area with cold winters. If too much water remains in your sprinkler lines, then that water will freeze, and the resulting expansion can break the plastic lines laid below the ground. Thanks for any input. If your irrigation lines start at a sillcock (spigot), the hose end that screws onto the sillcock is an excellent point. Those valves are typically housed in a plastic box below ground, typically identified by a round green plastic top. Once the required flushing duration is achieved, we verify that the water stream is clear. To move a sprinkler system line, we must first locate its origin. If they sink back down, you don't have enough volume available to hold them up. Most sprinkler systems are not buried deep enough to protect them from freezing. Make sure you flush the initial point of the system to avoid clogging. Pop sprinkler heads off of water irrigation lines that run out into the yard to speed up the velocity of the water running through circuit lines. Open the 2 Petcock’s (F) with a flat head screwdriver so that the screw head runs a 45 degree angle; Open the Inside Drain (B) to drain your system. 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