Self suction centrifugal pump does not produce water

1.No or insufficient liquid storage inside the pump casing
2.Air leakage in the suction pipeline
3.The speed is too low
4.The suction distance is too high or the suction pipeline is too long
5.Excessive leakage of mechanical seal
6.The gas in the suction pipeline cannot be discharged from the outlet

1.Add sufficient fluid storage
2.Check and eliminate any air leaks
3.Adjust the speed
4.Reduce suction or shorten the suction line
5.Repair or replace
6.Let it be expelled

The self-priming centrifugal pump has significant noise and vibration

1.Unstable footing
2.Pump shaft bending
3.Cavitation phenomenon
4.Severe bearing wear
5.There are impurities in the inlet pipeline
6.The main shafts of the pump and motor are not concentric

1.reinforce
2.Replace or calibrate
3.Adjust working conditions
4.replace
5.Remove debris
6.Adjust coaxiality

Insufficient water output of self-priming centrifugal pump

1.The impeller passage and suction pipe are blocked
2.Severe wear of impeller or impeller seal
3.Insufficient power or too low speed

1.Remove blockages
2.Replace the mouth ring
3.Add sufficient power and adjust to rated speed

Excessive power consumption of self-priming centrifugal pump shaft

1.Excessive traffic
2.The speed is too high
3.Bending of pump shaft or collision of impeller
4.The flow channel inside the pump is blocked or stuck

1.Raise export pressure
2.Reduce appropriately
3.Replace or calibrate
4.Line blockage

Flow rate (m3/h)

Head (m)

Equipped with motor (KW)

Flow rate (m3/h)

Head (m)

Equipped with motor (KW)

ZH25-25-125

3.2

20

1.1

1.6

5

0.55

ZH25-25-160

3.2

32

2.2

1.6

8

0.55

ZH25-25-200

3.2

50

5.5

1.6

12.5

0.75

ZH25-25-250

3.2

80

7.5

1.6

20

1.5

ZH40-32-125

6.3

20

1.5

3.2

5

0.55

ZH40-32-160

6.3

32

3

3.2

8

0.55

ZH40-32-200

6.3

50

5.5

3.2

12.5

1.1

ZH40-32-250

6.3

80

11

3.2

20

2.2

ZH50-32-125

12.5

20

3

6.3

5

0.55

ZH50-32-160

12.5

32

4

6.3

8

0.55

ZH50-32-200

12.5

50

7.5

6.3

12.5

1.1

ZH50-32-250

12.5

80

15

6.3

20

2.2

ZH65-50-125

25

20

4

12.5

5

0.55

ZH65-50-160

25

32

7.5

12.5

8

1.5

ZH65-40-200

25

50

11

12.5

12.5

2.2

ZH65-40-250

25

80

22

12.5

20

3

ZH65-40-315

25

125

37

12.5

32

5.5

ZH80-65-125

50

20

7.5

25

5

0.75

ZH80-50-160

50

32

11

25

8

1.5

ZH80-50-200

50

50

18.5

25

12.5

2.2

ZH80-50-250

50

80

37

25

20

4

ZH80-50-315

50

125

75

25

32

7.5

ZH100-80-125

100

20

15

20

5

1.5

ZH100-80-160

100

32

22

20

8

2.2

ZH100-65-200

100

50

37

20

12.5

4

ZH100-65-250

100

80

55

20

20

5.5

ZH100-65-315

100

125

75

20

32

11

ZH125-100-200

200

50

55

100

12.5

7.5

ZH125-100-250

200

80

75

100

20

11

ZH125-100-315

200

125

110

100

32

18.5

ZH125-100-400

100

50

37

ZH150-125-250

200

20

18.5

ZH150-125-315

200

32

37

ZH150-125-400

200

50

75

ZH200-150-250

400

20

55

ZH200-150-315

400

32

75

ZH200-150-400

400

50

110