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Highest flow Control Zone Kit on the market for large, commercial drip zones 15.0 to 40.0 gpm (56.8 to 151.4 l/m).
In order to supply 40 psi (2.8 bars) outlet pressure, additional pressure is needed at the inlet since there is some pressure loss from water flowing through the kit. The amount of pressure loss depends on the flowrate.
The charts below list the minimum inlet pressure required to supply 40 psi (2.8 bars) of outlet pressure.