Water Pressure for a Low Pressure System
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If you don't know your water pressure, you can contact your water provider or test it yourself with an inexpensive pressure guage available at most home improvement and hardware stores.
Two of our low pressure systems (the 3/8" Do-It-Yourself System and the 1/2" PVC Custom Misting System) are expandable using our 3/8" Misting Line 4 Nozzle Extension(s) or 1/2" PVC Misting Tees with Nozzles (5 Qty) respectively. You can expand each system to as many heads as your water pressure will support.
To expand these systems beyond the number of nozzles included in the base kit, you must make sure that your water pressure is sufficient by checking the chart provided here.