Hengsheng Industrial & Trading Co., Ltd.
Umex (Ningbo) Imp. & Exp. Co., Ltd.
Factory: Building 1, United Industrial Park, Shangfan, Hengxi, Yinzhou, Ningbo, China
Office: RM1610/1619, Huahong Fifth Avenue, No.719 Zhongxing Road, Ningbo, China
Tel: 0086-0574-87262189
        0086-0574-87328803

Fax: 0086-0574-88107190 87328810
E-mail:sales03@unipompe.com
Website: www.unipompe.com
    Home > Products > Garden pump > Submersible Pump

CDLF20 VERTICAL MULTI-STAGE CENTRIFUGL PUMPS

Application


CDL/CDLF is a kind of multifunctional products.It can be used to convey various from tap water to industrial liquid at different temperature and with different flow rate and pressure.CDL type is applicable to conveying non-corrosive liquid,while CDLF is suitable for slightly corrosive liquid.

8Water supply: Water filter and transport in Waterworks, boosting of main pipeline, boosting in high-rise buildings.
8Industrial boosting: Process flow water system, cleaning system, high-pressure washing system, fire fignting system. 
8Industrial liquid conveying: Cooling and air-conditioning system, boiler water suppy and condensing system, machine-accociated purpose, acids and alkali.
8 Water treatment: Ultrafiltration system, reverse osmosis system, boiler water supply and condensing system, distillation system, separator, swimming pool.
8 Irrigation: Farmland riiigation, spray irrigation, dripping irrigation.

Operation conditions 

8Thin, clean, non-flammable and non-explosive liqid containing no solid granules and fibers.
8Liquid temperature: Normal temperature type: -15℃~+70℃,Hot water type: +70℃~+120℃
8Ambient temperature: up to +40℃.

8 Altitude: up to 1000m.

Pump

  CDL/CDLF is a kind of vertical non-self priming multistage centrifugal pump,which is driven by a standard electric motor. The motor output shaft directly connects with the pump shaft through a coupling. The pressure-resistant cylinder and flow passage components are fixed between pump hesd and in-and outlet section with tie-bar bolts. The inlet and outlet are located at the pump bottom at the same plane. This kind of pump can be equipped with an intelligent protector to effectively prevent it from dry-running, out-of-phase and overload.

Electric motor

8Full-enclosed air-blast two-pole standard motor.
8Protection class: IP55
8Insulation class: F
8 Standard voltage: 50Hz: 1 x 220-230 / 240V
                                                 3 x 200-220 / 346-380V
                                                 3 x 220-240 / 380-415V
                                                 3 x 380-415V

 

Minimum inlet pressure NPSH

In case that the pressure in pump is lower than the steam pressure used to convey liquid, the cavitations will occur. To avoid cavitations, a minimum pressure at the inlet side of the pump shall be guaranteed. The maximum suction stroke can be calulated with following formula: H=Pb x 10.2-NPSH-Hf-Hs
Pb=atmosphere pressure [bar]
       (can be set as 1bar)
In a closed system, Pb means system pressure [bar]
NPSH=Nct positive suction head [m]
(It can be read out from the point of possible max. flow rate shown on NPSH curve)
Hf=Pipeline loss at the inlet [m]
Hv= Steam pressure [m]
Hs= Safety margin=Minimum 0.5m delivery head
If the calculated result H is positive, the pump may run under the max. Suction stroke H.
In case the calculated result H is negative, a delivery head of min.Inlet pressure is necessary.

 

Max.Working pressure

 

The following figure shows the limitation of pressure and temperature, which shall be in the scope as shown in the figure.

 

 

 

                                                                                                                                                                          

 

 

 

 

 

 

Max.Ambient temperature


 

 

When the pump operates under ambient temperature higher than 40 ℃ or under altitude higher than 1000m, because of low air density and poor cooling effects, the motor output power P2 will be decreased to certain extent. If the pump is operated under the above-said conditions, it should be equipped with motor of higher power.

 

Material CDL/CDLF8,16,20,32

NO.

Name

Material

AISI/ASTM

1

Motor

   

2

Pump head

Cast iron

ASTM25B

4

Mechanical seal

   

5

Top diffuser

Stainless steel

AISI304

6

Diffuser

Stainless steel

AISI304

7

Support diffuser

Stainless steel

AISI304

8

Inducer

Stainless steel

AISI304

11

Bearing

Tungesten carbide

 

12

Impeller

Stainless steel

AISI304

13

Shaft

Stainless steel

AISI304
AISI316L

14

Impeller sleeve

Stainless steel

AISI304

15

Cylinder

Stainless steel

AISI304

16

Coupling

Carbon steel

 

CDLF

3

Seal base

Stainless steel

AISI304

9

Inlet and outlet chamber

Stainless steel

AISI304

10

Base plate

Cast iron

ASTM25B

CDL

9

Inlet and outlet chamber

Cast iron

ASTM25B

Product range

Description

CDL1

CDL2

CDL3

CDL4

CDL8

CDL12

CDL16

CDL20

CDL32

CDL42

CDL65

CDL85

Rated flow[m3/h]

1

2 3

4

8

12

16

20

32

42

65

85

Rated flow[l/s]

0.28

0.56

0.83

1.1

2.2

3.3

4.4

5.6

8.9

11.7

18

24

Flow range[m3/h]

0.4-2

1-3.5

1.2-4

1.5-7

5-12

7-16

8-22

10-28

16-40

25-55

30-80

50-110

Flow range[l/s]

0.11-0.56

0.28-0.97

0.33-1.1

0.42-1.9

1.4-3.3

1.9-4.4

2.2-6.1

2.8-7.8

4.4-11.1

6.9-15.3

8.3-22.2

13.8-30.5

Max.pressure[bar]

21

23

22

21

21

22

22

23

26

30

22

17

Motor power[kW]

0.37-2.2

0.37-3

0.37-3

0.37-4

0.75-7.5

1.5-11

2.2-15

1.1-18.5

1.5-30

3.0-45

4.0-45

5.5-45

Temperature range[℃]

-15~+120

Max.efficiency[%]

44

46

54

57

62

63

66

69

73

75

76

77

Type

CDL

·

·

·

·

·

·

·

·

·

·

·

·

CDLF

·

·

·

·

·

·

·

·

·

·

·

·

CDL Pipe connection
DIN Flange

DN25

DN25

DN25

DN32

DN40

DN50

DN50

DN50

DN65

DN80

DN100

DN100

Oval Flange

G1

G1

G1

G11/4

G11/2

             
CDLF Pipe connection
Din Flange

DN25

DN25

DN25

DN32

DN40

DN50

DN50

DN50

DN65

DN80

DN100

DN100

Cutting ferrule joint

·

·

·

·

·

·

·

·

       
Pipe thread

·

·

·

·

·

·

·

·

       

 

Performance curve 

Following conditions are suitable for the performance curves shown bellow:
1、 All curves are based on the measured values of 50Hz;constant motor sspeed 2900rpm or 2950rpm.
2、 Curve tolerance in conformity with ISO9906 Annex A.
3、 Measurement is done with 20℃ air-free water,kinematic viscosity of 1mm2/sec.
4、 The operation of pump shall refer to the performance region indicated by the thickened curve to prevent overheating due to too small flow rate or overload of motor due to too large flow rate.

 

Installation sketch 

 

Pump Model

POWER

Q

10

12

14

16

18

20

22

24

26

28

D
I
M
E
N
S
I
O
N
S
mm

B1

B2

B1+B2

D1

D2

Weight

KW

(m3/h)

(kg)

CDL20-1

1.1

H
(m)

13.5

13

12.5

12

11

10

9

8

7

6

387

245

632

170

142

32

CDL20-2

2.2

27

26.5

26

25

24

23

22

20

18

15

397

290

687

190

155

43

CDL20-3

4.0

40

39.5

39

38

37

35

33

30

27

24

452

335

787

230

188

57

CDL20-4

5.5

54

53

52

51

49

47

44

41

37

33

517

430

947

260

208

72

CDL20-5

5.5

67

66

64

62

60

58

55

50

45

40

562

430

992

260

208

74

CDL20-6

7.5

81

79

77

75

73

70

66

61

55

49

607

430

1037

260

208

82

CDL20-7

7.5

95

93

91

89

86

82

77

71

65

58

652

430

1082

260

208

84

CDL20-8

11

109

107

105

102

99

94

89

82

75

67

785

430

1275

330

255

140

CDL20-10

11

136

134

131

128

124

118

111

103

95

85

875

490

1365

330

255

145

CDL20-12

15

164

162

158

154

149

142

133

124

114

102

965

490

1455

330

255

160

CDL20-14

15

192

189

185

180

174

166

156

145

133

119

1055

490

1545

330

255

165

CDL20-17

18.5

234

230

225

219

212

202

190

177

162

145

1190

550

1740

330

255

190