“Simple pump, reliable and pushes water quietly and efficiently. Makes water go from one end, to the other. The '00' pumps are interchangeable. Pull four bolts and remove the pump housing from between the two flanges. Replace pump cartridge (the metal spinning part) or the pump housing itself. Tighten four bolts and you are done. Be sure to put cutoff valves on either end of the flanges if you want an easy/mostly dry replacement. The cartridge for the 007 pumps are about the same cost as a new pump - about a $5 difference. But in larger pumps the difference is pronounced enough that it's a worthwhile consideration.”
