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5 Easy Steps to Calculate Cost Savings

Estimated Cost Savings Using Rain Bird 1800-PRS Spray Heads

Rain Bird's patented 1800 PRS in-stem pressure regulator ensures maximum spray head and nozzle performance, even with varying inlet pressures. By maintaining constant optimum pressure of 2,1 bar at the nozzle, 1800 PRS spray heads end misting and fogging caused by high pressures. For you that means water and cost savings. Enter the information from your system below and see how much water and money you can save.

See an example | See how the formula was derived

Calculate your estimated cost savings:  

Step 1:

Enter the pressure (bar) at the nozzle:
(Either enter the average dynamic pressure for the spray heads on one zone or enter the average dynamic pressure for all the spray heads on the entire system. If the dynamic pressure is not available, enter the system's static pressure. The static pressure will overstate the water savings, but it will still provide an estimate of the potential cost savings.)

 

Step 2:

Enter the flow (m3/h) at 2,1 bar:
(If you entered the pressure for one zone above, enter the flow (m3/h) for that zone. If you entered the pressure for the entire system above, enter the flow (m3/h) for the entire system.)

 

Step 3: Enter the Watering Schedule (All three required):    
  Average Watering Time Per Day (min):  
  Average Number of Watering Days per Week:  
  Average Watering Weeks per Year:    
Step 4: Enter the Unit Water Cost:  
  Unit Water Cost per cubic meter (m3): $ or other
Step 5: Enter Number of Sprinklers in the zone or System:    
  Enter Difference in Price Between Standard spray head and 1800-PRS: $ or other per unit


The estimated water savings is: m3/h
The estimated yearly water savings is: m3
The estimated yearly cost savings is*: $ or other
The estimated cost of upgrading to
1800 PRS is: 
$ or other
Estimated Payback Time: years
months

* (Due to varying conditions, your actual cost savings may be different. This formula is designed solely as a basis for estimating potential savings.)

See an example | See how the formula was derived