How to choose the pump

When the user to select the pump, it is best to agricultural machinery department approved point of sale, be sure to identify the manufacturer. Suggest give priority to buy water filling type condensate pump, and see the brand and water pump quality certificate. Don't buy "three noes" (i.e., no manufacturer, production date, production license) pumps, otherwise there is a problem, the user will do.

Could not, should be timely to raise pump from the water, and drain pump in water, especially in the cold winter. Then place it dry, conditional user can also in key parts of the pump and coated with butter, add lubricating oil to the bearings, in case the parts rust. In addition, the water pump of life, not as long as possible. If you don't use for a long time, not only easy to rust parts, also can reduce the use of pumps pump life.

And pump head should be considered: head refers to the head, and not carry water height, clear that to choose the pump is particularly important. Pump head is about 1.15 ~ 1.20 times the height of water. Such as a water to water the vertical height of 20 meters, the head needed for about 23 ~ 24 meters. Choosing pumps should make water pump nameplate on the head with the best head needed close to such a case, the pump efficiency is highest, use will be more economic. But not necessarily demands absolute equal, general deviation as long as no more than 20%, the water pump can be in the energy conservation work.

Then consider to choose appropriate flow pump: pump flow, namely the water yield, generally unfavorable choose too large, otherwise, would increase the cost of buying pumps. Should be specific analysis, such as user your draft with self-priming pump, flow should try to choose smaller; Irrigation with submersible pump, such as the user can select appropriate flow a few bigger.