Overview of ZW self-priming sewage pump  

The ZW self-priming sewage pump is based on the structure and performance of the ZX-type self-priming centrifugal pump and QW-type submersible 

sewage pump, and draws on the advantages of similar foreign products. It can be used like ordinary clean water self-priming pumps without installing 

a bottom valve. It needs to be irrigated and diverted, but it can also pump dirt, sediment, waste mine impurities, fecal treatment and engineering sewage

 and colloidal liquids containing large solid particles with a diameter of 60% of the outlet diameter and a fiber length of 1.5 times the diameter of the 

impeller. It reduces the labor intensity of manpower, is easy to install and use, and requires very little maintenance. The company has strong technical 

force, rich production experience and complete testing methods to ensure stable and reliable product quality.

ZW self-priming sewage pump model meaning

ZW self-priming sewage pump has a simple structure, good self-priming performance, strong sewage discharge capacity, and is easy to use and maintain.

ZW self-priming sewage pump is suitable for chemical, petroleum, pharmaceutical, mining, papermaking, fiber, pulp, textile, food, power plant and municipal 

sewage projects, public facility sewage, river and pond breeding and other industries. Commonly used models are: 40ZW10-20, 40ZW20-15, 40ZW15-30, 

50ZW10-20, 50ZW15-30, 65ZW25-30, 65ZW40-25, 80ZW40-16, 80ZW25-40, 80ZW65-25, 80ZW50-60, 100ZW100 - 15. 100ZW80-20, 100ZW100-30, 

150ZW180-20, 200ZW280-28 and other series, welcome to inquire and purchase!

Features of ZW self-priming sewage pump

The ZW self-priming sewage pump has a simple structure, good self-priming performance, strong sewage discharge capacity, high efficiency and energy saving, 

and is easy to use and maintain.

1. Strong sewage discharge capacity: The special anti-clogging design of the impeller ensures that the pump is efficient and free of clogging.

2. High efficiency and energy saving: using excellent hydraulic model, the efficiency is 3 to 5% higher than that of ordinary self-priming pumps.

3. Good self-priming performance: the self-priming height is 1 meter higher than that of ordinary self-priming pumps, and the self-priming time is shorter.

ZW self-priming sewage pump usage range

ZW self-priming sewage pump is suitable for chemical, petroleum, pharmaceutical, mining, papermaking, fiber, pulp, textile, food, power plant and municipal sewage projects, public facility sewage, river and pond breeding and other industries.

ZW self-priming sewage pump usage requirements

1. The pH value of the medium is 6 to 9 for cast iron pumps and 1 to 14 for stainless steel pumps.

2Ambient temperature ≤45℃, medium temperature ≤60℃.

3. The maximum diameter of the particles passing through is 60% of the pump diameter, and the fiber length is 5 times the diameter.

4. The total weight of impurities in the medium does not exceed 15% of the total weight of the medium, and the specific gravity of the medium does not exceed 1240 kg/cubic meter.

ZW self-priming sewage pump technical parameters:

Flow: 5-800m3/h;

Lift: 12-60m;

Motor power: 2.2-55KW;

Speed: 1450-2900r/min;

Caliber: φ25-φ300;

Medium temperature: ≤100℃;

Self-priming height: 4.5-6.0m.

Working principle of ZW self-priming sewage pump:

There is a liquid storage chamber in the pump body, which communicates with the pump working chamber through the upper return hole and the lower circulation hole, forming an axial return external mixing system of the pump. After the pump stops working, a certain volume of liquid has been stored in the pump cavity. When the pump starts, the liquid stored in the pump is discharged upward under the action of the impeller, entrained with air. The liquid flows back to the working chamber through the grid of the gas-liquid separation tube, and the gas is discharged out of the pump, forming a certain vacuum inside the pump. The degree of vacuum achieves the effect of self-priming.

Preparation and operation before starting the ZW self-priming sewage pump

1. Check whether the fasteners at the pump base, coupling, bearing seat and other connecting parts are loose? If it is loose, tighten it. 2. Is there any stuck or abnormal sound when turning the coupling by hand?

3. Open the water adding valve above the pump. Add the storage water to no less than two-thirds of the pump body volume, and close the valve. There is no need to add water when starting the machine later.

4. Connect the power supply and try turning it. Viewed from the motor end, it turns clockwise. (Reversal is strictly prohibited)

5. Start the machine and observe whether the pump is running normally? If there are any abnormalities, the cause should be found and eliminated.

ZW self-priming  sewage pump performance parameters

ZW self-priming   sewage pump	Flow	Lift	Power	Speed	Efficiency	Self-priming height	Self-priming time	weight
Model	(m3/h)	(m)	(km)	(r/min)	(%)	(m)	(min/5m)	(kg)
25ZW8-15	8	15	2.2	2900	45	5.5	3	100
32ZW5-20	5	20	2.2	2900	45	5.5	3	100
32ZW10-20	10	20	2.2	2900	45	5.5	3	100
32ZW9-30	9	30	3	2900	48	5.5	3	120
40ZW10-20	10	20	2.2	2900	45	5.5	3	100
40ZW20-15	20	15	2.2	2900	45	5.5	3	100
40ZW15-30	15	30	3	2900	48	5.5	3	120
50ZW10-20	10	20	2.2	2900	45	5.5	3	100
50ZW20-12	20	12	2.2	2900	45	5.5	3	100
50ZW15-30	15	30	3	2900	48	5.5	3	120
50ZW20-35	20	35	5.5	2900	48	5.5	3	150
65ZW30-18	30	18	4	1450	45	5.5	3	200
65ZW25-30	25	30	5.5	2900	50	5.5	3	200
65ZW25-40	25	40	7.5	2900	50	5.5	2	200
65ZW40-25	40	25	7.5	2900	50	5.5	2	200
65ZW65-25	65	25	11	2900	52	5.5	2	240
80ZW40-16	40	16	4	1450	50	5	3	240
80ZW40-25	40	25	7.5	2900	50	5.5	2	200
80ZW25-40	25	40	7.5	2900	50	5.5	2	200
80ZW65-25	65	25	11	2900	52	5.5	2	240
80ZW80-35	80	35	15	2900	45	5.5	3	285
80ZW80-35	80	35	15	1450	50	5.5	2	450
80ZW50-60	50	60	22	2900	55	5	3	340
100ZW100-15	100	15	7.5	1450	50	5.5	3	300
100ZW80-20	80	20	7.5	1450	53	5.5	3	300
100ZW100-20	100	20	11	1450	53	5.5	3	340
100ZW100-30	100	30	22	2900	53	5.5	2	510
125ZW120-20	120	20	15	1450	55	5.5	2	500
150ZW180-14	180	14	15	1450	60	5.5	3.5	500
150ZW180-20	180	20	22	1450	60	5	3	570
150ZW180-30	180	30	37	1450	65	5	3	680
150ZW180-38	180	38	55	1450	45	6	3.5	800
200ZW280-14	280	14	22	1450	65	5	3	700
200ZW280-28	280	28	55	1450	55	5.2	3	940
250ZW420-20	420	20	55	1450	61	4.5	2.5	1150
300ZW800-14	800	14	55	1450	65	4.5	2.5	1400

Related keywords: ZW self-priming sewage pump ZW self-priming sewage pump ZW self-priming non-clogging sewage pump