nk 50 200 188 aa1f2kesbqqehw3 98943198 drainage and surface water with 95730904 drainage and surface water with small impurities The VFI is the industrial version (4 20 mA output) of the Grundfos vortex flow meter range The unbalanced rubber bellows seal is according to DIN EN 12756 bearing bracket and impeller without disturbing the pump housing or pipework
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