OurTown
Well-known member
Is corrosion of the stem threads normal? All were installed with the factory brass elbow and those seem fine. The smaller 5 series is on the SS pump stand and it is a little worse. Maybe it's the HP soap? The pH is about 8 at the bay. The other one is from a 10 series and is not as bad. It is on a spot free pump. I'm not sure how old these are but the wash was built in 2003.
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