I was looking at the cheap Chinese water pump that came with my spindle and it looks like the actual impeller is missing. I wasn’t really in love with using such a cheap pump knowing that when it dies the spindle could be damaged. My plan was to add a flow switch to stop the 1F and turn off the spindle (which I still may do) but now that the pump is junk I have a choice.
I could get a replacement pump in exchange for the junk one but still have a cheap pump. I could get a better quality of pump, maybe a magnetically coupled pump from a brand name like Little Giant, but finding one with the same specs seems to be a little difficult. But I have a feeling that those Chinese pumps are more a case of optimism than fact. Plus I think the 1/4" hose is going to restrict flow. I don’t think I want to go with a chiller as it’ll just use more energy and the non Chinese brands are not cheap.
Does anyone have an idea what the actual cooling flow is? Is anyone using a brand name pump?