Detailed explanation of Micro water pump selection | PINCHENG

You can choose from several major principles such as "purpose, what liquid to pump, whether it needs to be self-primed, whether the pump is put in the water, and the type of micro-pump":

One、[Useage] Water and air dual purpose;

[Self-priming ability] Yes; [Whether put in water] No;

【Medium temperature】0-40℃, free of particles, oil, strong corrosion;

[Selection range] Miniature water and gas dual-purpose pump, miniature water and gas dual-purpose pump

1. Detailed requirements (meet one of the following requirements)：

(1). Requires water and air dual use (pumping for a while, pumping for a while or mixing with water and air), or requires a micropump to pump both air and water;

(2). Due to unmanned monitoring or working conditions decision, which may lead to water shortage, idling, dry running occasions; requirements for long-term idling, dry running without damage to the pump;

(3). Use a micro pump to pump air or vacuum, but sometimes liquid water enters the pump cavity.

(4). Mainly use micro-pumps to pump water, but do not want to manually add "diversion" before pumping, that is, hope that the pump has a "self-priming" function.

(5). The performance of volume, noise, continuous use, etc., it needs 24 hours of continuous operation;

2. Detailed analysis of selection：

Some traditional water pumps are afraid of "dry running", which may even damage the pump.The WKY, WNY, WPY, and WKA series products will not; because they are essentially a kind of composite function pump, which integrates the functions of a vacuum pump and a water pump. Some people call them "vacuum water pumps".Therefore, when there is no water, it will vacuum, and when there is water, it will pump water. Regardless of whether it is in the pumped state or the pumped state, it belongs to the normal working category, and there is no "dry running, idling" damage.

3.Conclusion

The advantages of WKA, WKY, WNY, WPY series miniature water pumps are: when they are not in contact with water, they draw a vacuum. After the vacuum is formed, the water is pressed up by the air pressure difference, and then it starts pumping, so there is no need to add water before each use. Regardless of whether there is air in the suction pipe, the water can be directly sucked up.

(1). When there are the above applications, please choose WKY, WNY, WPY, WKA series (see the difference below)

(2). [Brushless micro water pump WKY]: high-end brushless motor, long life; pumping flow (600-1000ml/Min); high head (4-5 meters); no speed adjustment, easy to use;

(3). [Brushless speed control micro water pump WNY]: high-end brushless motor, long life; pumping flow (240-1000ml/Min); high head (2-5 meters); adjustable speed and flow control, high-end water pump application first choice;;

(4). [Brushless speed control micro water pump WPY]: high-end brushless motor, long life; pumping flow (350ml/Min); high head (1 meter); adjustable speed control flow, the smallest brushless speed control micro water pump;

(5). [Micro water pump WKA]: Brush motor, large torque, large pumping flow (600-1300ml/Min); high head (3-5 meters); high cost performance; but life span is slightly shorter than high-end brushless motors

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Two、【Use】Simply pump water or solution;

【Self-priming ability】Yes;[Whether to put in the water] No;

【Medium temperature】0-40℃, free of particles, oil, strong corrosion;

[Selection range] Mini self-priming water pump, mini high pressure water pump

1. Detailed requirements：

The pump must output a certain pressure and flow rate; it must have self-priming ability; it is only pumping water or solution (no water shortage or idling for a short time, no water and gas dual use): it is best to have double protection for overheating and overpressure;

2. Model selection detailed analysis and conclusion：

(1). The flow requirement is large (about 9-25 liters/min), and the pressure requirement is not high (about 1-4 kg)：

Mainly used for new energy vehicle water cycle, environmental water sampling, industrial water cycle, upgrading, etc.Requires low noise, long life, high self-priming; and with over-pressure and over-heat double protection, etc., you can choose the miniature circulating water pump, etc. series;

BSP-S series: ultra-high self-priming 5 meters, the largest flow rate of the self-priming pump (25L/Min), the largest kilogram pressure;

BSP series: self-priming height 4 meters, 16L/Min flow rate, maximum pressure kg, filter + multiple connectors, low noise;

CSP series: self-priming height 2 meters, 9-12L/Min flow rate, maximum pressure kg, filter + multiple connectors, small size, low noise

(2).The flow rate is not high (about 4-7 liters/minute), but the pressure is relatively high (about 4-11 kg)：

Mainly used for intermittent use such as atomization, cooling, spraying, flushing, pressurization, etc. (that is, it does not need to work for a long time under high pressure or large load, work for a period of time and stop for a period of time and then work to repeat the process), you can choose micro high pressure Water pump, series, etc.; HSP series: maximum pressure of 11 kg, opening flow rate of 7L/Min; delivery of metal thread + 2 pagoda joints, double protection of overpressure and overheating;

PSP series: self-priming height>2.5 meters, 5L/Min flow, maximum pressure 7kg, with overpressure + pressure relief protection;

ASP5540：See below for introduction

(3).The flow requirement is small (about 2～4 liters/minute), but the pressure is relatively high (about 2～5 kg)For intermittent use of industrial equipment spray cooling, humidification, agricultural spraying, small amount of liquid transfer, circulation, water sampling, etc. optional miniature spray pump series (all with overpressure protection).

ASP3820: maximum pressure kg, opening flow rate 2.0L/Min; low noise;

ASP2015：The highest pressure is kilograms, the opening flow rate is 3.5L/Min; the self-priming height is 1 meter higher;

ASP5526：Maximum pressure kg, opening flow 2.6L/Min; low noise;

ASP5540：Maximum pressure in kilograms, opening flow 4.0L/Min; large flow and high pressure;

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Three、[Use] Simply pump water or liquid;

[Self-priming ability] not required; [Whether to put in water] Yes;

[Medium temperature] 0-40℃, containing a small amount of oil, solid particles, suspended matter, etc.;

[Selection range] Micro submersible pump, micro centrifugal pump, small submersible pump

1. Detailed requirements：

There are relatively large requirements for flow (more than 25 liters/min), pressure and head requirements are not high; but the medium contains a small amount of oil, solid particles, suspended matter, etc.

(1). Detailed analysis of selection:

(2). The medium to be pumped contains a small number of soft solid particles with a small diameter (such as fish feces, a small amount of sewage sludge, suspended matter, etc.), but the viscosity should not be too large, and there should be no entanglements such as hair;

You can choose the miniature submersible pump,,,, series. (5). The working medium is allowed to contain a small amount of oil (such as a small amount of oil floating on the sewage surface), but not all of it is oil!

Can choose miniature DC submersible pump,,, series。

(5). The pump must not be placed in water, it does not need to have self-priming ability, and the soft solid particles can be cut into smaller particles to be discharged through the pump; other requirements are the same as those in 1, 2 above;

You can choose the ultra large flow series of micro impeller pump.

2.In conclusion

(1). When there are the above applications, the mini submersible pump,,,, series (see the difference below)

(2). Medium flow miniature submersible pump QZ-K series：

Flow rate (large cubic meter/hour); maximum head (3-4.5 meters); self-contained installation card seat + filter cover, 6-point thread + 1 inch pagoda hose connector, convenient installation, ultra-low noise, exquisite workmanship, easy to clean and take care of;

(3). Medium flow micro submersible pump QZ series：

High cost performance, large flow rate per hour); maximum head (3-4 meters); comes with a filter cover, connected to a 20mm inner diameter hose, ultra-small volume only cans, large cans, ultra-low noise, easy to clean;

(4). Large flow micro submersible pump QD series：

High cost performance, large flow rate per hour); maximum head (5-6 meters); comes with a filter cover, connected to a 1-inch hose, only a bottled coffee cup, low noise, easy to install, easy to clean;

(5). Super large flow micro submersible pump QC series：

Large flow rate/hour); maximum head (7-8 meters); comes with a filter cover, connected to a 1.5-inch hose, can only contain a large milk powder tank, low noise, sea water resistance, stainless steel pump shaft, good waterproof performance

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Four、[Use] Pump high-temperature water or solution;

[Self-priming ability] Yes; [Whether put in water] No

[Medium temperature] 0-100℃, free of particles, oil, and strong corrosion;

[Selection range] High temperature resistant micro water pump, micro diaphragm water pump

Detailed requirements：

Extract high-temperature working medium (0-100°C), such as using a micro water pump for water circulation and cooling, or pumping high temperature, high temperature water vapor, high temperature liquid, etc.;

1. Detailed analysis of selection Because the internal components of the pump increase the force and load when pumping high-temperature media, and the high temperature will also cause major changes in the physical properties of the flow material, the stable and reliable high-temperature-resistant water pumps in the micro water pumps are generally not It is easy to achieve a large flow (above 1.5L/MIN), especially in the working condition of long-term pumping of high-temperature water; in addition, when high-temperature water is pumped, the space will be squeezed due to gas precipitation in the water, which will reduce the pumping flow. (This is not a quality problem of the pump, please pay attention to the selection!)

2. Conclusion Our mini high temperature resistant water pumps have undergone a series of long-term full load continuous tests and are officially launched under stable and reliable conditions. At present, the high temperature resistant miniature water pump series are mainly mini water and air dual-purpose pumps WKY, WNY, WPY, WKA Series, so there are water and air dual-purpose, need to run dry without water, flow requirements are not large, can also be used when the head pressure is not high。

The following mainly introduces the models that are often used for high temperature resistance in these four series:

(1). WKY1000 (high temperature type) in WKY series：

High-grade brushless motor, long life; pumping flow (1000ml/Min); high head (5 meters); no speed adjustment, easy to use;

(2). WNY1000 (high temperature type) in the WNY series：

High-end brushless motor, long life; pumping flow (1000ml/Min); high head (5 meters); adjustable speed and flow rate, the first choice for high-end pump applications;

(3). WKA1300 (high temperature type) of WKA series：

Brushed motor, large torque, large pumping flow (1300ml/Min); high head (5 meters); high cost performance; the largest flow rate of high temperature resistant water pumps; but the service life is slightly shorter than that of high-end brushless motors (but WKA1300 can be customized Long-life type)

In the WPY series, the high temperature model is generally not used because of the small flow rate.

Pincheng have different micro water pumps, and each series have characteristics. Please contact us or check the specification details on our website, there’s introduce and test data for application.