Material sensitivity to acid

The table provides a summary of the resistance to acid for each major component of an irrigation system.

If you have a sensitive material in your system, you need to inject the acid after this component. For example, if you have a cement mainline, you need to inject the acid after the mainline, most likely at the secondary control head.

System part Material Resistance
Drip lines PE, PP +
Tubing PVC +
Tubing Cement, steel, cast iron, galvanized, aluminum
Connectors Acetal +/-
Connectors PP +

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