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What kind of head pressure will the pump be pushing against? (The numbers you need to know is how high vertically the pump need to push the water and the length of the horizontal run.) What is the application? (What is pump’s job? What kind of materials will the pump be asked to relocate? Raw Sewage or Clear Water) To make a decision on which type of pump will work best for any certain application there are four questions you will need to know the answer to: 3 THINGS YOU MUST KNOW IN ORDER TO CHOOSE THE CORRECT PUMP I will explain each one of these categories in much more detail below. The Sewage Ejector and Sewage Grinder pumps are both used to pump raw sewage. The Sump/Effluent submersible pumps are designed to pump relatively clean water usually behind an aerobic system or septic tank. High Head Effluent pumps are primarily used behind an aerobic system and pump to either a spray irrigation system or drip irrigation system. In this article I will discuss the differences between our many different styles of submersible pumps and help you decide which pump to choose for your application.Īlthough we have quite a large selection, our submersible pumps can be broken down into four main categories: High Head Effluent, Sump/Effluent, Sewage Ejector, and Sewage Grinder. The size, shape, and capabilities of a submersible pump can vary greatly from application to application. And, there are certain scenarios when you could use either type.How To Choose The Correct Submersible Pump In fact, in most cases a Sewage Ejector pump is the much better option. In summary, not all sewage handling pumps are Grinder Pumps and a Sewage Grinder pump is not always necessary to pump raw sewage. You have a low vertical distance to lift the water (under 70 feet).When pumping sewage short distances (750 feet or less).When pumping sewage to a gravity sewer main.
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You should only use a Sewage Grinder Pump when one the following apply to your application: Therefore, if you are not pumping into a shared sewer main or have less than 30 feet of head, you do want a Sewage Ejector pump not a Sewage Grinder pump. If they do not have to pump against at least this much back pressure, the motor will begin to spin at an extremely high rate of RPMs causing it to burn up fairly quickly.
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PLEASE NOTE: Grinder pumps must be used in scenarios where there will be at least a minimum of 30 feet of head pressure put on them. The units without internal capacitors require a special control panel with built in capacitors to operate the pump. These require no control panel for operation. The most commonly used forms are with internal capacitors. Each model comes in two forms, one with internal capacitors and one without internal capacitors. They are available in both Little Giant and Ashland Pump brands. The second is to pump over extremely long distances, or up over very high elevation changes.Īll of our Grinder Pumps start at 2.0 HP and have 1-1/4’’ NPT discharges. The first is to pump from a residence into a shared pressurized sewer main. There a couple of applications that these pumps are normally used in. These pumps can grind up sewage into a slurry and pump it at a very high pressure to its destination. However, Sewage Grinder pumps are much more powerful. Sewage Grinder pumps are designed to handle raw sewage pumping jobs, just like the Sewage Ejector pumps.