QZB series Submersible Axial/Mixed Flow Pump

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Type description

Take 350QZB-50 as an example

350: the nominal diameter of the pump

Q: submersible

Z: axial flow

B: semi-adjustable blade

50: 1/10 of the pump specific speed (take the integer part)

According to different pump specific speeds, the flow capacity range of this type of axial flow pump can reach up to 700m3-1400 m3

The principle of Axial flow pump is to lifting water according to the thrust caused by the impeller when rotating. Because water moves along the axial in the impeller, so we called it axial flow pump.

In accordance with its mode of installation, axial flow pump can be distinguished into three class: vertical, horizontal, inclined. Their structures are almost the same. Now the vertical form is used widely. The main accessories contains bell-mouthed pipe, impeller, guide blade, outlet syphon, shaft and bearing, stuffing box, etc.

Summarize of QZ series Axial flow pump:

Installation of water flow Channel: in terms of recommended sample installation diagram

The form of water exit: flap valve or other ways

Installation ways: suspended by bent pipe; suspended in well casing, etc.


Submersible motor

Power Level: electrical performance conforms to GB756

Protection level: IP68

Cooling method: ICW08A41

Basic installation form: IM3013

Voltage grade: ≤355kw, voltage,380v/660v; 355kw,voltage, 380v, 660v, 6000v, 10000v

Insulation level: F

Rated frequency: 50Hz

Length of cable: 10m

Shaft seal

There are two or three stages of mechanical seal. The first stage called carborundum (directly contact with water). The second and third stage called graphite and carborundum.

Leak proof Equipment

QZ, QH series pump have been equipped with leak proof sensors. When the oil tank, the inner part of motor or the junction box has been leaked by water, the sensor will signal or made the motor shut down, and retain the malfunction signal.

Over heating protection system

A overheating protection device is fastened on the motor winding. When the temperature exceeds the stated &#118alue, the device will signal or made the motor shut down.

Rotation direction:

Seen from the top of the motor, the impeller is rotating clock wisely.


QZ series axial flow pump, QH series mixed-flow pump is widely used in industry and agriculture water lifting, urban water supply, light polluted water discharge and other water transfer project.

Working condition

Clean water with the temperature no more than 50 or some liquids that are similar to water.

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Q:Why does the GB/T3216 specify the pump performance tolerance as positive and negative?
Only half a year after graduation. Professional stuff is forgotten...I can't help you...
Q:i need to change the water pump in my car?
Go to Autozone and buy a repair manual for it. In that repair manual, it will tell you how to replace the water pump. All you need to do is buy the parts and tools that are needed for that. The manual should tell you what tools you need also.
Q:On demand water pump?
RV section is probably under cars and transportation, others. On demand pumps are quite common and used in many RV's.
Q:97 Dodge Stratus Timing belt & Water pump?
Non- interference engine.Meaning no damage. repair it. 100% guess here Parts: Pump / T-belt / Tensioner,Coolant - $140 your cost -200 shop Labor : 3 hours/Or free rate of difficulty 1--10 -5-
Q:How to prime a water pump for a turtle tank?
Pump has to be off Open the reservoir on the pump You have to use water already in your setup, fill a cup with it Fill the pump reservoir until full, then refill the cup, you'll need plenty of water you might need help here from someone at home, you also might need to hold pump, or the water might drain out as you work below Turn on the pump, while the pump is running,..... pour more water in reservoir until pump is pumping water. Have to close reservoir, then put pump where it belongs. In Pets Forum here, there's a sub-forum for reptiles, theres all kinds of help there for other turtle stuff. Good luck
Q:86 535i bmw water pump? installation ?
wow, first of all the car is pretty old, becareful. u may need new clips for hoses and gaskets. from 1-10 ill say 7.
Q:Why should the water inlet of water pump be fitted with reducer?
Is the water in the end sealing (Shaqi) under the condition of satisfying the original design of the pumping pipe flow.Water injection; height of the larger, more sacred,
Q:Pump frequent start will reduce the service life, I ask what kind of frequency is called frequent start?
Pump is the same, often start, not just reduce the service life of the pump, motor, contactor life will be shortened.
Q:Anyone know anything about Mazda water pumps?
If you had a water pump leak you'd know it! There would be coolant draining out of water pump seal the minute you filled the cooling system. A water pump leak doesn't get coolant into the motor. It will get the timing belt wet with antifreeze and cause the belt to jump time and possibly bend your valves. The only way you'll get coolant in the motor oil is if there is a head gasket leak. To check for that you need to have a block test done.
Q:Would a missing bolt in the water pump make it leak?
The water pump is on the side of the engine that has the serpentine belt. Don't know what it is that you are feeling in the back of the engine but I doubt it's the water pump. But if you feel wetness there, that's probably where the leak is or it's above that part and just dripping on that part. I would look at the heater hoses that go through the firewall and see whether one of those two hoses is leaking and dripping down.

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