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What patents say, doesn't necessarily mean much ! I have spent time this winter researching patents on golf equipment. It is unbelievable how many there are based on the same principle (polar moment of inertia) but the claims are on how it is applied to improve one's game. Patents were issued...

It's about the air-not the water! I don't think that this device is hoax. I believe that it is a little pressure regulator. There are several factors in play. 1) most municipal water main pressures are around 70+ psi - some higher-some lower. 2) All you really need for residential two story...