How to choose a surface pump in a 30-meter well for watering the garden?

Hello!

The depth of the suction pipe depends on the dynamic and static level of the well, as well as on the diameter of the pipe. For the calculation, you can use one of the calculators posted on the Internet.

You can find out how to determine the static and dynamic level by reading this article on our website. For example, the difference between the levels is 5 meters, while you are using an HDPE pipe with a diameter of 25 mm (1 ″). Therefore, the suction depth for your well will be 6 meters. To the obtained value it is recommended to add 10-20% to lower the level. This means the minimum depth to which you need to lower the suction pipe is 7 meters. The standard length of the PND pipe is 100 mm, which means you will need one product.

Calculation of the pump power for irrigation is also simpler and faster to perform using a special calculator. Most of the calculators found on the network allow you to accurately make a selection. The calculation takes into account the depth of the well, the water mirror, the area of ​​the irrigated area, as well as the presence and number of additional water consumers. If we take into account that the water from the well will be used only for irrigation of a garden with an area of ​​6 acres, then the minimum pump capacity will be 0.5 m3 / hour or 5000 liters / hour. The lifting height of the pump must be at least 34 meters. These parameters are possessed by inexpensive submersible pumps of Russian and foreign production. The nuances of selecting a pump for a well can be found in this article.