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3 Common Questions about Sewage Lift Pump Stations

Flip Law - Monday, March 18, 2013

sewage lift pump station

Did you ever wonder how sewage lift pump stations work?


Water treatment and sewage lift pump stations are important parts of having a water system that is healthy and functional. There are many people who have challenging questions regarding these special applications and here are some of the most common.

1. What information should about my application should I collect before selecting a pump for my system? Pumps are a highly engineered product and selecting the proper pump for an application requires some specific information. First of all it is important to understand what kind of liquid you will be pumping. Information such as Specific Gravity, percent solids, spherical diameter of these solids and the temperature of the fluid are all critical pieces of information. You will also need to know the position of the pump in relation to the fluid, the elevation from the pump to the discharge point, the flow rate requirement in gallons per minute (gpm) and the pressure requirement in pounds per square inch (psi). In addition to these items you will need to know what electrical power is available in terms of voltage and phase.

2. What is the difference between a centrifugal pump and a trash pump? In reality they are both types of centrifugal pumps, however the trash style is created with a volute and an impeller that will allow the passage of large predetermined sized solids.

3. When sizing a pump is bigger always better? The short answer in no. A pump that is oversized for an application will typically not operate at the pump’s best efficiency point (BEP). Not only does this lower efficiency consume more power, but operating a pump near the ends of the pump curve will shorten the life of the pump motor and could potentially cause the motor to burn up.

Like any industry there are a lot of questions you may find yourself asking and it is challenging to find a good solid resource who can properly help you. The experts at W.P. Law, Inc. can help. They have a team of knowledgeable staff that can guide you through any problem or question you have about sewage lift pump stations.

Visit www.wplawinc.com/corporate-contact.
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