How to Determine Sprinkler Emails Per Zone
An automatic sprinkler system retains lawns looking healthy and beautiful whatever the weather, but they need to be set up correctly to function well. The amount of sprinklers each zone is dependent upon the pounds per square inch pressure (PSI) and gallons per minute (GPM) flow of this system as well as the gallons per minute employed by each sprinkler head. Sprinkler heads utilize more gallons per minute at higher PSI but may also be spaced farther apart.
Measure PSI in first morning. Attach a pressure gauge into the tap closest to the water meter. Turn the water on full force. Read the pressure on the gauge.
Measure GPM, or gallons per minute leak, by setting a 5-gallon bucket under the faucet. Turn the tap on and record how many seconds it takes for the bucket to fill up. Calculate GPM by dividing the amount of gallons (5) from the amount of seconds and multiplying by 60.
Check the company’s performance graphs for the sprinklers you intend to use. The chart will let you know the radius of this spray and also GPM of flow for different stresses. Divide the GPM flow through your water system from the GPM flow through the sprinklers in your available pressure. Round down the nearest lot. This is the maximum amount of sprinklers you can use each zone.