What is the head of a self - priming oil pump?

Jul 17, 2025Leave a message

Hey there! As a supplier of self-priming oil pumps, I've been getting a lot of questions lately about what the head of a self-priming oil pump is. So, I thought I'd write this blog to break it down for you in simple terms.

First off, let's talk about what a self-priming oil pump is. It's a type of pump that can remove air from the suction line and prime itself without the need for external priming devices. This makes it super convenient, especially in applications where the pump needs to start and stop frequently.

Now, onto the head of the self-priming oil pump. The head is basically the height that the pump can lift the oil vertically. It's measured in feet or meters and is an important factor to consider when choosing a pump for your specific application.

There are two main types of head: static head and total head. Static head is the vertical distance between the oil source and the point where the oil is being delivered. For example, if you're pumping oil from a tank on the ground to a storage container on a second-floor platform, the static head is the height of that platform above the ground.

Total head, on the other hand, takes into account not only the static head but also the friction losses in the piping system. Friction losses occur when the oil flows through the pipes, valves, and fittings. These losses can add up, especially if the pipes are long or have a small diameter. So, the total head is the sum of the static head and the friction head.

Let's say you're using a self-priming oil pump to transfer oil from a drum to a machine. The static head might be just a few feet, but if the pipes are narrow and there are a lot of bends and valves, the friction head could be significant. This means that you'll need a pump with a higher total head to ensure that the oil can flow smoothly.

Now, why is the head so important? Well, if you choose a pump with a head that's too low for your application, the pump won't be able to lift the oil to the desired height. This can result in poor performance, reduced flow rates, and even pump failure. On the other hand, if you choose a pump with a head that's too high, you'll be wasting energy and money.

So, how do you determine the right head for your self-priming oil pump? The first step is to measure the static head. You can do this by using a tape measure or a laser level to find the vertical distance between the oil source and the delivery point. Next, you need to estimate the friction head. This can be a bit more complicated, as it depends on factors like the pipe diameter, length, material, and the number of fittings.

There are some online calculators and charts available that can help you estimate the friction head. You can also consult with a pump expert or a hydraulic engineer to get a more accurate calculation.

Electric Plunger Oil PumpExplosion-proof Self-priming Oil Pump

Once you have the static head and the estimated friction head, you can add them together to get the total head. Then, you can choose a self-priming oil pump that has a total head rating that's equal to or slightly higher than your calculated total head.

At our company, we offer a wide range of self-priming oil pumps with different head ratings to meet your specific needs. For example, our Electric Plunger Oil Pump is a great option for applications where you need a high head and a reliable performance. It's powered by electricity and can handle a variety of oil viscosities.

If you're looking for a pump that's powered by compressed air, our Pneumatic Drum Pump is a good choice. It's designed to pump oil from drums and other containers and has a decent head rating.

And for applications where safety is a concern, we have our Explosion-proof Self-priming Oil Pump. This pump is specially designed to operate in hazardous environments and has a high head to ensure efficient oil transfer.

In conclusion, the head of a self-priming oil pump is a crucial factor to consider when choosing a pump for your application. By understanding the difference between static head and total head and accurately calculating the required head, you can select the right pump that will provide optimal performance and efficiency.

If you're still not sure which self-priming oil pump is right for you or if you have any other questions, don't hesitate to reach out to us. We're here to help you make the best decision for your oil pumping needs. Let's start a conversation and see how we can work together to get your oil pumping system up and running smoothly.

References

  • Pump Handbook, Karassik, I. J., Messina, J. P., Cooper, P. E., & Heald, C. C.
  • Hydraulic Engineering, Chow, V. T.