You didn't specify that the pressure in the line should NEVER exceed 50psi. Most sprinkler systems are not buried deep enough to protect them from freezing. That compressor cannot produce enough air to properly flush the lines. If you have a long irrigation pipe in your back yard, then it may be very annoying when it starts to become clogged. Those valves are typically housed in a plastic box below ground, typically identified by a round green plastic top. Locate the Origin of the Line. Make sure you flush the system at the beginning of the season. Make sure to have a bucket available for water drainage. Flush Valves can be installed at low points in the line to assist with draining the system. If they sink back down, you don't have enough volume available to hold them up. 2. Draining a little water may not be enough to prevent pipe rupture. During our flushing procedures we add a safety factor of 2. I have seven zones on a deep well. This can be a significant difficulty, which may prevent you from getting your plants properly fed and watered. 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. Flush the Sprinkler System. 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. Turn off your water at the dedicated Sprinkler Line Shutoff (A) in your basement / crawlspace. How to Flush Out a Drip Irrigation System. Otherwise, debris will breach the system and block the nozzles. Make sure you flush the initial point of the system to avoid clogging. Flush all the water from the system to avoid damaging pipes and fixtures. 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. Emitters can also be installed at low points to assist with draining. 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. The next action is to flush the pipes to find, identify, and clear foreign materials. Should I do each head or just the furthest one. What is the best way to flush out a sprinkler system. 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. In order to correct this problem, you will need to unclog the pipe using natural agents. If you have a more elaborate irrigation system, find a suitable blow-out point such as … You are not doing a proper blow out. Any segment of pipe less than 300 feet will be flushed for a minimum of 1 minute. The air should flush out of the system within a few minutes. Once the required flushing duration is achieved, we verify that the water stream is clear. Keep your system clean and clear of clogs by flushing it with water at least 3 times a season. I am replacing my valves and want a clean start. Then, turn on the water to force it through the line to clear it. Flush valves will open every time the system shuts off, draining water trapped in the line. When you blow the system out, the heads should stay UP for the entire 5 min. Ordinary wear and tear or contaminated water can potentially block the nozzles. Look for the screws holding them in place and unscrew them with a screwdriver. 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. If your irrigation lines start at a sillcock (spigot), the hose end that screws onto the sillcock is an excellent point. To move a sprinkler system line, we must first locate its origin. 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