You decide the simplest solution is to place your thumb over the end of the hose as opposed to walking the distance to the tomatoes. It’s been a long week and you are tired and don’t want to walk all the way across the garden. ![]() You are watering your garden, but you can’t quite reach the tomatoes that are at the back of the garden. ![]() Still not sure what is happening? Picture for a moment a water hose that you hold in your hands. Using XYZ123 pump, how much pressure will we have at 40’? Now, let’s say that we only need to pump water a total of 40’ high. In the example above, we could say that XZY123 pump is capable of a maximum of 100 feet of total dynamic head (total head feet) and a maximum pounds per square inch of 43.29 PSI. The dead head of a water pump simply means that there is zero (0) flow of water at the maximum total distance of head. However, this would be at what is called “dead head”. So what is the maximum pounds per square inch? XYZ123 pump is capable of pumping a maximum of 100 feet of total dynamic head. We are looking to purchase a pump, that we will call Model number: XYZ123. So, let's do a short conversion exercise: Becoming familiar with the units and where they come from will make your work easier and faster. When working with pumps and plumbing, you'll work between feet of head and PSI routinely. As we work through a problem, we need to convert to the unit that is most common – feet of head. ![]() 433 and 2.31, are the conversion numbers used to convert from one unit to the other.Īs we learned in school, to solve a problem we need to be in common units. Or, one-foot column of water that's 1-inch square weighs. Translated, that means that a column of water that's 1-inch square and 2.31 feet tall will weigh 1 pound. The relationship between PSI and feet of head is that 2.31 feet of head = 1 PSI. As we size a pumping system, we'll want to accomplish building pressure (PSI). Hygienic & Sanitary Double Diaphragm PumpsĪs we work with water pumps, we find that pressure is presented to us in two common units: PSI (pounds per square inch) or feet of head.High Purity PTFE Double Diaphragm Pumps.Wet End Frame Mounted Centrifugal Pumps.
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