A garden pump is used to transport water. It is all the more annoying when the pressure is too low. Before you replace the device, you should look for the causes and fix them.

In a nutshell

  • Air and dirt are often the cause of the pressure loss
  • The suction height must not be exceeded
  • Pressure switches can compensate for the changing pressure

garden pumps

Garden pumps are pumps that are used outdoors to transport water. This can be irrigation or drainage. The term garden pump is very broad. For example, this designation includes:

  • centrifugal pumps
  • piston pumps
  • gear pumps

As a rule, they are operated electrically or with petrol so that the generator can generate the delivery pressure. If the possible or desired output is not generated, there is a fault that can have various causes.

air

Since the suction line of the garden pump is filled with air, especially before it is used for the first time, it must be removed. Because air is one reason why the garden pump works poorly. For pumps that are not self-priming, this must be done manually. To check this, hold the end of the hose under water while the pump is running. A bucket of water should be sufficient here. If you see air bubbles, there is a fault in the suction line. In this case, bleed the pump according to the instructions in the description of the garden pump to increase the delivery pressure.

tightness

A leak in the suction hose is often the cause of insufficient pressure. Because in this case the pump can no longer suck in the water and also cannot pump it. However, the reason for this does not necessarily have to be the suction hose, but the connections on the pump can also be responsible for the lower performance if they are not properly sealed. The measures to increase the pressure are simple: Check the suction hose and connections to see whether they are tight.

suction lift

The suction height of suction pumps is not unlimited. With very good pumps, it is between seven and eight meters. If the height to be overcome is higher, the device no longer works properly. To determine if suction lift is the cause of under-pressure, place the pump at a lower location. If it works there without any problems, the suction height at the previous location was too low.

constipation or contamination

Whether a blockage in the line is the cause of the loss of pressure depends on where you get the water from and how clean the water is. Leaves or tree remains often get stuck in the intake area. You should therefore check the suction hose and suction area and remove dirt if necessary.

Tip: For the pump to work, the suction filter must be clean. If it is dirty, the device cannot work properly.

water depth

In submersible pumps that are used as garden pumps, too little water depth is another reason for too little pressure. You should therefore check whether the suction area is completely submerged.

generate constant pressure

To avoid pressure fluctuations, you can mount a pressure switch on the pump. This is possible with many models. If the water pressure decreases or increases, the pressure switch reacts by switching the on or off. In this way, the water is transported evenly. Alternatively, you can set the desired water pressure in advance. Since pressure switches are relatively expensive, should be considered when purchasing

  • on and off time
  • dry run protection
  • material
  • operating pressure

respect, think highly of.

Water clock in the garden

frequently asked Questions

Does the hose connection affect performance?

With thicker hoses you have less pressure loss. Therefore, you should use ¾ inch diameter hoses whenever possible.

When should I bleed my garden pump?

In any case before the first start-up. This includes not only the new purchase, but also the case when the pump has not been in operation for a long time.

Are there pressure differences between electric and petrol garden pumps?

The performance of these pumps are similar. However, there are different models with different performance levels.

Category:

Garden maintenance