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Before installing your sprinklers and valves from scratch you should work out your water source flow rate, to be able to calculate the amount of sprinkler heads you can run per zone start by doing a bucket test.
“With a bucket and stopwatch on the water supply tap you are going to be using”
Use the following equation to calculate the flow rate:
60 ÷ Time (in seconds) x bucket size in litres = litres per minute
Substitute your results into the equation and calculate to determine how many litres per minute your flow rate is.
For example:
Let’s say you filled your 9-litre bucket in 15 seconds.
- Time (sec) = 15
- Litres = 9
So, according to our equation, we have (60 ÷ 15) x 9 = 36 Litres per minute.
Then, to find out your flow rate in Litres per hour, multiply this by 60 (i.e. 36 x 60 = 2,160 L/hr)