Hey, Trying to understand the piping requirments for a booster pump. See the attachment for the following scenario. Currently there are no non return valves installed in the piping system and the pump is off. The water comes off the hose reeler and I have assumed non return valve needed to be installed at the mark locations. Water is constantly being used at the sprays and the pumps purpose is to boost the water pressure when other outlets get used. Would this work, or should the water always flow straight through the booster pump. The booster pump is a Grundfos CR15.