If you have a need for fluid transfer, the end suction will most likely have you covered. They can handle a wide variety of fluid types and as a result can be seen used in countless industries every day. That’s one of the reasons why companies like Engineered Systems and Products choose this simple but reliable pump design. End suction pumpscan also be found at a very affordable price point which is attractive to customers.
Here is some background information along with advantages and disadvantages of this type of pump. The team at ESP can help you decide whether or not this is the correct choice for your specific situation and answer any questions. Contact our team to discuss your goals and design a plan custom to your needs.
WHAT IS AN END SUCTION PUMP?
An end suction pump is a type of centrifugal pump. Typically, this type of pump will have one impeller with the suction coming in one side of the pump and discharging the fluid out the top. The fluid being pumped will increase velocity as it passes through the impeller. Next, diffusion converts the high velocity to high pressure before exiting the top of the end suction pump.
This style of pump can be driven in a variety of different ways depending on your specific circumstances. Some of these include electric motors, air motors, diesel of gasoline motors, and steam turbines.
The first operations that used a machine similar to a centrifugal pump was a mud lifting device created by Francesco di Giorgio Martini in 1475. Many years later in the late 17th century is when centrifugal pumps were designed and developed to be used with straight impeller vanes. The curved impeller vain design, which is more commonly used today, was implemented in 1851.
It is also important to know that there are different types of end suction pumps to consider when purchasing equipment.
FRAME MOUNTED END SUCTION PUMPS
A frame mounted design has a shaft and bearings that are separate from the pump motor. In this case, the pump shaft is coupled to the motor shaft. The main advantages are increased efficiency and lower cycle costs when using a frame mounted design.
CLOSE COUPLED END SUCTION PUMPS
With a close coupled design, the pump shaft and motor shaft are one. The impeller is attached directly to the end of the motor shaft which has its positives and negatives as well. The close coupled design has advantages such as space and cost savings. However, a disadvantage is that there is higher risk to motor damage if the pump experiences a seal failure.
Now that you have a basic understanding of how these pumps operate along with the different designs, let’s take a look at the many different applications and industries where they can be found.
COMMON APPLICATIONS OF END SUCTION PUMPS
End suction pumps are used in a wide variety of applications. They can be found in almost every industry that involves fluid transfer. It won’t take you long to find one of these in your local factory or processing plant. Below are just a handful of areas these pumps are used.
- Chemical processing plants
- Oil and Gas industry
- Factory pumping
- Food and Drink manufacturing
- Water supply
- Fire fighting
- Cooling towers
As mentioned previously, end suction pumps can be found in so many industries due to their large supply and reasonable price points. They can handle almost anything, including water at various temperatures, viscous oils, corrosive chemicals, and abrasive materials. Below are some main advantages and disadvantages of this pump type.
ADVANTAGES OF END SUCTION PUMPS
The advantage that comes up most frequently is the low initial cost for most scenarios. This is very attractive for the correct application. In addition, these pumps have a reputation for being fairly efficient considering the low price point.
Both of these are thanks to the simple design of the pump. It does not use any valves, contains very few moving parts, and takes up very little space. Simply put, a motor turns the impeller, which moves water or other fluids from point A to point B. The simplicity allows for operation with very little maintenance. This is very important to companies like PCM, who depend on the reliability of the equipment to keep operations moving and profitable.
Although end suction pumps boast many great qualities at a low price point, they are not necessarily the best decision for every application; therefore, it’s important to consult experts like ESP.
DISADVANTAGES OF END SUCTION PUMPS
One of the main disadvantages to this pump type is the fact that it relies on the rotation of the impeller to move the fluid. Because of this, it is important to properly prime the pump before use. A pump is primed by filling it completely with fluid before bringing it to operating speed. Another common issue that can stem from inadequate priming is something called cavitation. A pump will experience cavitation when air makes its way into the mix. For example, increasing the speed of a pump before it is fully primed. Air can also be introduced when the high speed of the fluid causes vapor bubbles to form. The bubbles bursting will cause cavitation and eventually allow corrosion of the impeller and casing to take place.
With all these points considered, is an end suction pump the right choice for you?
MAKING THE RIGHT DECISION
In short, depending on your fluid type and other circumstances, end suction pumps may or may not be the best choice for you. Whatever you choose, you can rest easy knowing the you are in good hands with ESP. We team up with manufacturing partners such as Peerless Pump, Ebara, Grundfos, and that share our vision of offering the highest quality products and the most competitive pricing. This is of course backed with exceptional service for our clients.
Contact ESP today to discuss how end suction pumps can meet your fluid transfer needs. With their low initial cost, reliability, and simplicity this type of pump may be exactly what you need. We would also be happy to answer any questions that you may have.