This can be a significant difficulty, which may prevent you from getting your plants properly fed and watered. That compressor cannot produce enough air to properly flush the lines. Once the required flushing duration is achieved, we verify that the water stream is clear. Blowing out the Lines. 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. Thanks for any input. Locate the Origin of the Line. I am replacing my valves and want a clean start. You didn't specify that the pressure in the line should NEVER exceed 50psi. 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. Flush Valves can be installed at low points in the line to assist with draining the system. Most sprinkler systems are not buried deep enough to protect them from freezing. The air should flush out of the system within a few minutes. Keep your system clean and clear of clogs by flushing it with water at least 3 times a season. Then, turn on the water to force it through the line to clear it. Make sure you flush the initial point of the system to avoid clogging. If you have a long irrigation pipe in your back yard, then it may be very annoying when it starts to become clogged. Make sure to have a bucket available for water drainage. Flush the Sprinkler System. 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. Otherwise, debris will breach the system and block the nozzles. During our flushing procedures we add a safety factor of 2. You are not doing a proper blow out. If your irrigation lines start at a sillcock (spigot), the hose end that screws onto the sillcock is an excellent point. I have seven zones on a deep well. If you have a more elaborate irrigation system, find a suitable blow-out point such as … Turn off your water at the dedicated Sprinkler Line Shutoff (A) in your basement / crawlspace. Flush valves will open every time the system shuts off, draining water trapped in the line. Make sure you flush the system at the beginning of the season. Should I do each head or just the furthest one. Look for the screws holding them in place and unscrew them with a screwdriver. Those valves are typically housed in a plastic box below ground, typically identified by a round green plastic top. What is the best way to flush out a sprinkler system. Ordinary wear and tear or contaminated water can potentially block the nozzles. Another common method is to blow out the lines using compressed air. Within your sprinkler system, there are a set of valves that controls each sprinkler line. Draining a little water may not be enough to prevent pipe rupture. Any segment of pipe less than 300 feet will be flushed for a minimum of 1 minute. 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. 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. Emitters can also be installed at low points to assist with draining. To move a sprinkler system line, we must first locate its origin. Since water expands as it freezes, draining the system before cold weather strikes ensures that the pipes won't burst. Flush all the water from the system to avoid damaging pipes and fixtures. In order to correct this problem, you will need to unclog the pipe using natural agents. 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