FAQ About Selecting A Gear Pump

Gear pumps are vital to fluid transfers in various machinery, including power tools and engines. There are several types of pumps available and choosing the right one for your particular application can sometimes be challenging. To help you make the right decision, here is what you need to know.  

What Features Should You Look For?

There are differences between the different types of gear pumps that help determine which ones you need for your application. Before you can consider the differences, you need to know which features you should look for.  

For instance, the flow capacity is one of the features that dictates how well the gear pump performs. The pump has a gallon per minute, or gpm, rate. The rate dictates how much fluid is transferred without any restrictions, such as a hose. The higher the gpm is, the more consistent the flow is.  

Another consideration is the discharge pressure. As the gear pump operates, the discharge pressure can build up. If the gear pump does not have the capacity to process and dispel the pressure, the machinery can start to overheat. Ideally, you should look for a pump with a high discharge pressure rate to avoid this complication. 

If you are planning to operate your machinery or application without any fluids at some point, you also have to factor in the run-dry capabilities of the pump. Without fluids, there could be damage if the pump does not have the ability to operate for a period of time in a dry manner.  

Do You Need an Internal or External Pump?

In addition to considering the previously mentioned features, you have to decide if you want an internal or external pump. Internal pumps are versatile and can be used in a number of applications. However, external pumps are generally used in engines and machine tools.  

External pumps tend to operate well under high pressure and do not generate a lot of noise. By contrast, internal pumps are limited in the amount of pressure they can handle. However, the discharge from the internal pump is constant and even.  

Both the internal and external pumps do require maintenance, but there is little required. How much depends largely on the type and the use for it.  

To further explore your gear pump needs, consult with a dealer such as HyVal Industries Inc. You can learn about the different types available and determine which one is best for the machinery you are using. 


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