Last updated: August 20, 2021

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Every petrol station has one - the diesel pump. With it, filling a tank with fuel or even transferring fuel is child's play. It is worth considering buying a diesel pump, especially for larger delivery volumes. There is a suitable pump for every purpose.

With our large diesel pump test 2021, we not only want to present the best pumps to you, but also generally highlight advantages and disadvantages as well as purchase criteria. This way, you can easily find the right diesel pump for you in the future.




Summary

  • Diesel pumps make it possible to pump fuel in a simple way
  • There are electric pumps and hand pumps. Depending on the delivery rate, the decision is made for the respective pump
  • Electric pumps are practical for large delivery rates, hand pumps rather for small ones. If you need to move quickly, an electric pump is the better option

The Best Diesel Pump: Our Picks

Guide: Questions you should ask yourself before buying a diesel pump

What is a diesel pump?

A diesel pump uses its pumping function to pump fuel into a tank. However, it can also be used to transfer fuel from one tank to another. A diesel pump is used to fill a vehicle tank via the pump at a petrol station. There are different types of diesel pumps: Pumps that deliver fuel by vacuum or electronically.

The diesel pump should not be confused with the injection pump of a vehicle. This serves to convey a certain amount of fuel from the tank to the engine and inject it into the combustion chamber at the right moment.

What is the intended use?

To begin with, you should consider in which area the pump is to be used. Do you need a pump for a motor vehicle or for private or agricultural use? If you need a fuel injection pump for your car, please refer to another information site.

The use determines the type of diesel pump you need. The greater the flow rate, the more powerful the pump must be.

Buying the right pump depends on how much fluid you want to pump. For example, a petrol station needs a more powerful pump as opposed to simply filling a vehicle tank.

Can you rent a diesel pump?

Yes, as long as it is a commercial use with a large flow rate. Smaller pumps for private use as well as vehicle pumps are not available for rent. Here, it is advisable to call on friends if you need a pump for smaller flow rates.

Dieselpumpe-1

An example of a pump that can be used in the agricultural sector. Only large pumps are offered for rent.
(Image source: pixabay.com / pashminu)

Are there alternatives to a diesel pump?

If the pure pumping function is in the foreground, as is usually the case in the agricultural sector, there are so-called hand pumps as an alternative. Of course, this takes longer. Therefore, it makes sense to get a new pump for larger quantities.

Decision: What types of diesel pumps are there and which is the right one for you?

In this chapter, we get to the bottom of the different types of diesel pumps and present the advantages and disadvantages of each type.

The following diesel pumps are available:

  • Electric pumps
  • Hand pumps

What are the characteristics of an electric pump and what are their advantages and disadvantages?

Electrically operated diesel pumps have the option of pumping fuel via electricity. This works either via a socket or the car battery.

This type of pump simplifies the pumping function immensely. The electricity means that the fuel is pumped automatically, which is easy on the muscles. Another advantage is that it saves time. Electric pumps are more powerful and can pump larger quantities of fuel.

The fuel is pumped automatically.

Disadvantages, on the other hand, are the dependence on a power source. There are also the additional accessories. To connect the pump to a car battery, you need suitable connection cables. This results in a higher price compared to a hand pump.

Advantages
  • Automatic delivery
  • Time saving
  • Larger delivery rates
Disadvantages
  • Dependence on a power source
  • Additional accessories
  • Expensive

What distinguishes hand pumps and what are their advantages and disadvantages?

Hand pumps are sufficient for filling vehicles or small canisters. The pump is simply screwed onto a full barrel and, for example, a vehicle tank. With the help of a lever, the fuel is transferred from A to B by means of compressed air.

This does not require any complicated handling. In addition, one is independent of a power source. This saves the car battery and electricity costs. In comparison, hand pumps are cheaper than other types of pumps.

However, with the advantages come the disadvantages. Pumping large quantities of fuel with a hand pump is not advisable. It is a lengthy affair.

Advantages
  • Independence from a power source
  • Cheap
Disadvantages
  • Low delivery rate
  • Tedious work

Buying criteria: You can use these factors to compare and evaluate diesel pumps

In the following, we will show you which aspects you can use to decide between the many possible diesel pumps.

The criteria you can use to compare diesel pumps include:

In the following paragraphs we will explain what the individual criteria are.

Area of application

The area of application of the diesel pump depends on the tank to be filled.

The required power of the pump depends on the area of application.

There are differences between pumps for trucks and passenger car tanks as well as for other agricultural vehicles, e.g. tractors. This criterion determines all the others: the desired output, the power supply, the filter insert, the meter and other accessories. The price is of course also linked to this. A pump for filling truck tanks is more expensive simply because of its necessary size and performance.

Delivery rate

The delivery rate determines the amount of fuel that is pumped per minute. A high delivery rate therefore saves time. The delivery rate depends on the power supply of the pump. The more powerful the pump, the more fuel can be pumped in a short time.

A delivery rate of 40-60 litres per minute is sufficient for filling a vehicle tank.

Power supply

Hand pumps do not require an extra power supply.

The most common electric pumps are 12V and 24V.

For electrically driven pumps, there is a choice between 12 volts, 24 volts and 230 volts. The most common are the 12V and 24V. These can be connected directly to a car battery. The stronger the power, the faster the pumping function works and more volume can be pumped within a short time.

Filter insert

Every high-quality pump should be equipped with a filter. This prevents impurities in the fuel from entering the tank. A filter also prevents blockages caused by impurities. This in turn reduces the risk of overheating of the pump, which can occur in the event of blockages.

Automatic/manual operation

Clearly, automatic or electric operation of a pump is easier and saves time and muscle power. Especially when larger quantities of fuel have to be pumped, an electrically operated diesel pump is more practical. It is worth investing a little more and even making sure that the diesel pump can be connected to the car's battery - this saves you an extra power cable.

Accessories and spare parts

When buying a diesel pump, it is also important to check whether accessories are available.

Matching hoses are practical for transferring the fuel from A to B. The longer the hose, the more flexible it is. The longer the hose, the more flexible you are when refuelling a tank. This way, the source can be further away and it is still possible to use the pump.

Every high-quality pump has accessories. Hoses, a meter and a bypass valve are practical.

Another useful accessory is a meter. This way you can always keep an eye on how much fuel has been pumped and stop when a desired amount has been reached.

It was explained above that impurities can lead to clogging and consequently to overheating of the pump. To prevent this from happening, it is advisable to get a diesel pump that has a bypass valve.

Finally, the general manageability of the pump is important. How compactly can it be packed and does it have a carrying handle?

Dieselpumpe-2

A way in which a diesel pump can be used. In this case, the diesel pump delivers fuel to the petrol pump.
(Image source: pixabay.com / Michael Gaida)

Facts worth knowing about diesel pumps

How do I maintain the diesel pump properly?

A regular check of the pump is essential. The filter and the hoses are particularly important.

The filter traps residues in the fuel. This prevents deposits in the pipes and thus blockages. The filter should be cleaned regularly so that possible impurities do not get into the tank.

The hoses are an important accessory. The fuel flows through them to the desired destination. You should make sure that the hoses are tight to avoid unnecessary leaks. You can easily find leaks by running water through the hoses.

In summary:

  1. Clean the filter: Open the pump housing, remove the filter and clean it.
  2. Check the hoses: Locate leaks with water flowing through.

What to do if the diesel pump is leaking?

If fuel is leaking, the pump is leaking. It is important to find out where the leak is located. If there are transitions, it may even be possible to replace only the sealing rings. Otherwise, the entire hose must be replaced.

  1. Locate leak
  2. Replace sealing rings or complete hose

Dieselpumpe-3

A diesel pump that delivers fluid via hoses. Leaky hoses lead to a drop in the pump's performance. Therefore, check regularly for leaks.
(Image source: unsplash.com / Denny Müller)

Picture source: Gojda/ 123rf.com

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