In most suburban sections, the well serves for watering and water fence for household needs. When the depth of the well is small, then any surface pump will cope with the task.
The depth of the well, which can reach 8 meters or more, will require a more serious and powerful unit. Submissive pumps will cope with such a task of lifting water.
Device and principle of operation
The conditions in which you will have to be the pump dictate their rules. The usual form for him is a cylinder or a streamlined capsule. For the case, stainless steel is used.
The engine is placed in a sealed chamber, the impeller is designed to remove water. The cooling of the mechanism occurs only if the pump is immersed in the aquatic environment. The floats are designed to determine the critical level of water and disconnect the pump from power.
Very carefully, you need to handle a submersible pump. The fact is that for cooling and lubrication, the oil that is inside the pump body is used. Mechanical damage or blows can lead to the depressurization of the chamber, which will lead to the spill of the oil and it will require cleaning the well. Now some manufacturers have begun to replace it with a special liquid, which does not harm a person and the environment.
Compare the models
Wilo TWI 5-E 504 FS
Wilo TWI 5-E 504 FS Polesy Pump is a cylindrical shape 54 cm high. The weight is quite impressive – 19 kg. The unit is made in Germany. Pump power 750 kW.
It is designed to ensure pure water without sediment, rain and drinking water with immersion up to 20 meters. The maximum that this pump is capable of – 5 cubic meters. M6 m
The pump is also from a German manufacturer, used for pumping water in which a suspension of sand is allowed, but not more than 50 g. to the cube. m.
The power of the unit is 750 kW, and the weight is less than that of the Wilo TWI 5-E 504 FS, and is 13.8 kg. The dimensions of the pump are also smaller. Stainless steel cylinder height 47 cm.
The manufacturer for these pumps has developed an engine with wear resistance and guarantees the average service life of up to 15 (!) years. In addition, the VMTec Aqua Ves 5 3h model.
A special cooling liquid is flooded in the engine, which is harmless to the environment. The cost of this submersible pump from 19 thousand. p.
GNDFOS SPO 3-40 A
The pump capsule is made of stainless steel with double mechanical sealing of the oil chamber. Unit power 750 kW, with maximum performance 4.5 cubic meters. MNDFOS SPO 3-40 A starts from 24 thousand. p.
We conclude
Three models have the same power and the same performance. However, VMTEC pumps are equipped with engines that can work for a very long period with an increased efficiency. In addition, the oil in the case was replaced with a safe cooling liquid. And another argument in favor of VMTec is the price.
