Well i’ll be buggered, as they would say here.
That is something I would not have thought of.
I skimped on my last pump and am totally regretting not buying the exact Iwaki pump you have got. In the end I probably will anyway. I have seen those things in all sorts of adverse conditions just pumping away, day in day out. They make awesome beer sludge pumps. They are about as reliable as you are ever going to get would be my take.