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While reading Classic Hydronics, the PONPC, as noted, I cant visualize (page 58-60). (ie) If the pressure doesnt change there is no flow as has been stated. I wrote down what I see on pressure changes in the tank if I were water where I would go... see attachment) am I missing something. gigven these pressure changes i visualize are small but necessary the Bernoulli effect on water.
dont know if you can enlarge this enough to see the numbers
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