I need to change the central heating pump. The old one is a DAB 65/130 which unfortunately does not mean anything to me. Screwfix sell a reasonably priced pump which is 4.82 max delivery head. But I do not know how to relate one specification to the other.
The 130 is the distance from flange to flange 130mm and I would think 65 relates to the available pumping head 6.5m. Your new pump is probably a lower capacity. Go for a 6 metre pump.
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