Mar. 31, 2025
Agricultural
The first consideration is the nature of the liquid being pumped as this has a major impact on the type of pump. Important factors to consider include general composition, the concentration and size of suspended particles as well as the liquid’s pH level, temperature, and chemical content. For example, is it water with fine particles or a much thicker fluid, and how aggressive a media is it?
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One of the most important performance considerations is the flow requirement, i.e. how much liquid needs to be moved and how quickly? For example, a pump with a maximum flow rate of 138m3/h (608 US gpm) (such as Atlas Copco’s WEDA D50) will remove water from a pool that is 36m3 in 15 minutes (158 US gpm in 15 minutes). However, a pump with a flow rate of 350m3/h (1,541 US gpm) (such as the WEDA D80) would empty the pool in just 6 minutes.
Over what height does the fluid need to be pumped and how far does it need to travel? This will have an impact on the pressure that the pump needs to deliver to ensure it can pump efficiently and reliably. The greater the distance the water needs to be pumped, the more friction is created, which results in pressure loss from the pump. Pumps need to overcome gravity resistance as well as friction losses. When specifying, check the manufacturer’s published pump curve, which shows head height against flow rate, to ensure it covers the required duty point.
If mains electricity is available, an electric pump will be the best and most efficient choice in most cases. Electric submersible pumps – such as Atlas Copco’s WEDA pumps – are the simplest, most energy-efficient and most economical approach, providing high power in light and compact packages. If the site is remote and prone to a fluctuating mains supply, consider a pump that has the motor and starter equipped with inbuilt electrical protection against varying voltage, phase failure and human error.
Apart from the type of fluid to be pumped, energy source, and flow and volume needs, other factors need to be considered when choosing a submersible pump such as energy economy, durability and servicing expense for each pump offered. Making the right choice is not a simple decision, but with expert guidance it can be achieved satisfactorily.
Submersible water pumps work underwater and are one of the most popular types of pumps on the market today.
But because there are so many types of submersible pumps on the market, how do you choose a submersible pump for the correct application?
This article will show you the differences between the types of submersible pumps so you can choose exactly the type of submersible water pump you need to get the job done right.
There are many types of submersible pumps for many different applications, as explained in the next section.
A submersible water pump's primary benefit is that it does not suffer air leaks in the pump (called pump cavitation). An added benefit of a deep well pump application is that you don't need to worry about priming the well pump because the entire pump operates underwater. Submersible water pumps are also very efficient and are not subject to overheating conditions like above-water pumps.
With the exception of submersible pumps being used for permanent applications such as a pond pump or a deep well pump, smaller submersible utility pumps are portable and lightweight as well, making the pumps extremely convenient to use in hard-to-reach places or small areas like window wells.
The sections below explain the uses and applications for each type of submersible water pump. Follow the links to learn more about each type of submersible pump.
Submersible utility pumps can remove standing water, empty clogged sinks, drain window wells, and much more. When choosing a utility pump, the most important factor to consider is portability. Utility pumps are best used in small spaces where other water pumps just won't fit.
The inlet size on the pump will tell you how quickly you can pump the water through the pump and discharge it elsewhere. A utility pump with a float switch (pictured below) is great too because they automate the pump by turning it on and off when water levels change, so you don't have to watch it while it works.
Urgent and semi-regular pumping applications are perfect for utility pumps, as long as the water doesn't have debris or solids in it. Utility pumps are not meant to pump solid items at all, so don't use one for cleaning dirty water with solids, and especially don't use this pump for sewage-type applications.
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Another type of portable pump, submersible trash pumps are great because they are as simple to use as attaching a hose a dropping it in (but don't drop it in by the hose or power cord).
If your sump pump fails or you experience flooding with water that has a lot of sand, leaves, or other debris in it, a normal utility pump won't work-that's a job for a submersible trash pump.
Using a heavy-duty impeller, the centrifugal force shoots the water and debris out of the pump through larger inlets, hoses, and outlets than other pumps. These pumps are also more expensive than utility pumps but they are essential if you need to remove dirty water quickly in small or large areas. Because of the nature of the debris trash pumps can handle, they are usually rated for continuous duty and can easily pass sand, pebbles, leaves and more.
View Top-Rated Submersible Trash Pumps
Pool cover pumps are pretty simple to use; just attach the hose, plug it in, and set on your pool cover and watch it go. These pumps are sometimes confused with utility pumps, which makes sense because utility pumps are sometimes used for removing water from pool covers, too.
How to Remove Water From Pool Covers
Water features can quickly make you the envy of the neighborhood, and pond and fountain pumps make it simple and quick for your yard to stand out. Fountain pumps and pond pumps both have some surprising uses. They can also be used in aquariums, and these pumps are great for filtration or powering waterfalls and small streams around your property.
Some pond pumps come with a direct-drive dual discharge option, allowing one pump to serve two water features at once, which is easier than plumbing a separate pump for each feature. Fountain and pond pumps are usually quiet and rated for continuous duty, so they'll work for as long as they're plugged in. If you plan on using one for a pond with fish, make sure the pump is oil-free in design (almost all are oil-less).
How to Winterize a Fountain or Pond Pump
Deep well submersible pumps enjoy all of the benefits listed earlier, plus have the benefit of coming with a built-in check valve to ensure system pressure and preventing backflow. Plus, because these pumps are sealed and used underwater, they are virtually maintenance-free and are made with corrosion-resistant materials.
Deep well pumps can be used in well-water applications from 15'-25' and in excess of 500' in some situations, making them the best option for wells that are narrow or deep. Just make sure to choose the proper pump size and the correct two or three-wiring option for the application.
Learn the Differences Between Types of Well Pumps
There are many types of submersible pumps, but hopefully, now you better understand the differences between the most popular pumps and their common applications. There are even more specialized water pumps that have specific uses or are used to solve specific problems.
If you know you need one of the submersible water pumps above, or if you haven't found quite what you're searching for, we're here to help. Give us a call at
1 (888) 455- to speak with our pump experts, who can help you build a plan from purchase to installation.
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