How to select good quality water pumps, to buy pumps

how to choose a good pump, how to choose the pump, to buy pumps considerations, to buy pumps note

a attention, to buy pumps

when choosing pumps need to distinguish between the stand or fall of the water pump performance, the size of the power is not important, but the unit efficiency. Under the condition of the same head, flow rate, small power, high efficiency, also means that performance is good. Water pump has the highest lift flow and rated head flow mark methods, most of the water pump on the market at the highest lift flow to annotate, some zhejiang pump annotations are on the market, such as ordinary booster pump, 90 w and 120 w copper pump power is 80 w ( The highest lift 10 meters) And 120 w ( The highest lift 13 meters) 。 Part of the company in order to get good sales, into a 100 w ( 12 - top lift 15 meters) And 150 w ( 15 - the highest lift 20 meters) , the flow rate is also high. There are self-priming pump, theory is 10 meters, suction due to water pump NPSH ( The manufacture of pump head caused by the roughness of the phenomenon of water vaporization) The existence of self-priming pump suction for 8 - effectively 8. 5 meters. But businesses in order to attract customers attention to these parameters standard beyond imagination. So before buying the pump to the actual data of the sellers know more about the water pump, such as the actual lift and the actual flow, so as not to cause trouble.

booster pump at work, head to zero flow is the largest, the highest lift when the flow rate is zero. According to the change of each point of the flow and head, can draw the pump work curve, this is the performance of the pump characteristic curve. selection should be according to the scene to decide, such as pipe length, diameter size, bend, capacity of water heater, water heater types, nozzle water yield, and so on. Especially under pressure type electric water heater, because of its special device, must choose a larger water pump such as water yield household automatic booster pump, hot water or pump worked hard.

pipe pressurization is not installed pipeline booster pump is fine, there are many reasons that cause low pressure, the typical such as pipe ageing, galvanized pipe, in particular, will gradually rust after used for many years, lead to blockage can lead to water cut; And 90 degrees bend too much, can cause water yield reduction, as the causes of the water pressure is low, with booster pump after the effect is not obvious.

booster pump has a characteristic, when the pipeline flow can't keep up with the flow of water pump or exceeds the flow of water pump, booster effect is not obvious. So before buy pumps to troubleshoot the cause of the water pressure is low, can't blind to buy water pump. If you want to buy, it is recommended that the consulting plumber or a water pump factory by experienced staff. To the benefits of business staff are one thousand pump pressure effect is not ideal can request merchants exchange or return.

2, how to choose a good pump

if particles of impurities in the conveying medium must choose can adapt the pump can be chosen products such as: sewage pump

in addition if transport corrosive liquid have to choose: chemical pump

if the delivery of hot water and want to use submersible pump, this kind of situation can't choose ordinary submersible pump product because normal submersible pump is not high temperature resistant, if normal submersible pump used in conveying hot water will appear the phenomenon of burning motor, this kind of situation must also choose: hot water high temperature resistant submersible pump

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