RD2 twin with 2 dosing pumps + Dosing pump controller. The interval controller allows for adjustment of the duration of the on/off cycle for each pump over a broad time span - from seconds to days.
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RD3 triple with 3 dosing pumps + Dosing pump controller. The interval controller allows for adjustment of the duration of the on/off cycle for each pump over a broad time span - from seconds to days.
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RD4 quadro with 4 dosing pumps + Dosing pump controller. The interval controller allows for adjustment of the duration of the on/off cycle for each pump over a broad time span - from seconds to days.
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