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  1. I had an old shurflo pump # SHURflo 4008-101-E65 3.0 Revolution Water Pump that i replaced with a new one form Amazon. The new one pulsed as everyone described herein. I was going to also by a accumultor tank. I did pulse on toilet, did on kitchen faucet, did on shower. I watched a u-tube video explaining how to adjust the pressure regulator on the pump. There is an adjustment allen screw on the back which allowed me to adjust the pressure. I turned on the water in the kitchen where the pulsing was most noticeable, went to the pump, turned the screw counterclockwise 1/4 turn or until the pulsing stopped. you can tell this easily at the motor as it turns on/off/on/off. Now it just runs steady. Tested it on all fixtures hot cold and mixture and its 100%
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