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CWL Series Marine Horizontal Centrifugal Pump

Introduction:

CWL series marine horizontal centrifugal pumps are suitable to be cooling pump, fire fight pump and sanitary pump etc on board a ship or a boat and transport seawater, fresh water or other incorrosive liquids. Themedium temperature don't exceed 75℃. Of course this kind of pump can also be used as industrial water supply and drainage. Irrigation farmland and orchard.

All products of CWL series marine horizontal centrifugal pumps satisfy the stipulations of the shipbuilding industrial specialized standard CB/T 3721-91《Marine horizontal centrifugal pump》 and have been passed the examination by the surveyors of the classification society.

Being many advantages，soon afterwords, CWL series marine horizontal centrifugal pumps had been pronounced to instead of the original BA series marine horizontal centrifugal pumps. This mainly is because the latte has lower effic.iency and higher energy consumption.

CWL series marine horizontal centrifugal pumps may be made of different materials such as nodular cast iron, carbon steel, copper alloy. stainless steel and high alloy steel according to different requirement or different transported liquids.

The typical example and its explanation for the pump type

For an example：32CWL-4
32-entrance diameter of the pump, mm.
CWL- marine horizontal centrifugal pump
4-approximate value of pump's specific Speed devided by ten

Main technical performance parameters of the pump

If voltage is 440V,frequency is 60Hz,then footnote "1" is added behind CWL，as 32CWL1-4.

Tablel

Type	voltage 380V Frequency 50Hz
	Main technical Performance parameters
	Capacity m³/h	Head m	Speed r/min	NPSHr m	Shaft power kW	Matched power kW	weight Pump Kg
32CWL-4	20.0	22	2950	4.2		1.1	62
	4.0	21.0		4.1	0.47
	4.8	20.9		4.1
32CWL-3	2.0	31.0	2950	3.0		1.5	60
	4.0	30.0		2.5	0.78
	4.8	29.2		2.8
40CWL-5	4.0	22.2	2950	4.4		1.1	50
	8.0	21.0		3.0	0.85
	9.6	20.0		3.1
40CWL-4	4.0	32.3	2950	3.6		2.2	65
	8.0	30.0		2.6	1.31
	9.6	28.5		2.5
40CWL-3	4.0	43	2950	3.0		3.0	87
	8.0	42		2.5	2.13
	9.6	41		2.9

Continued table

Type	voltage 380V Frequency 50Hz
	Main technical Performance parameters
	Capacity m³/h	Head m	Speed r/min	NPSHr m	Shaft power kW	Matched power kW	weight Pump Kg
50CWL-6	6.0	22.2	2950	2.8		1.5	60
	12	21		2.0	1.16
	14.4	19.8		3.0
50CWL-4.5	6.0	31.5	2950	6.0		3.0	82
	12	30		3.6	1.78
	14.4	28		3.3
50CWL-4	6.0	43.7	2950	2.8		4.0	101
	12	42		3.4	2.75
	14.4	40.4		4.1
50CWL-8	10.5	22.8	2950	2.2		2.2	65
	21	21		2.2	2.2
	25.2	19		2.6
50CWL-7	10.5	33.6	2950	2.2		4.0	95
	21	30		2.4	4.0
	25.2	27		2.9
50CWL-5	10.5	45.5	2950	5.0		5.5	125
	21	42		2.8	5.5
	25.2	39.5		3.1
50CWL-3.5	10.5	64	2950	1.8		7.5	134
	21	60		2.3	7.5
	25.2	57		2.9
65CWL-11	17.5	23.7	2950	3.5		4.0	96
	35	21		3.8	4.0
	42	19.4		4.0
65CWL-8	17.5	33	2950	2.2		5.5	118
	35	30		2.4	5.5
	42	28		2.7
65CWL-6	17.5	45.2	2950	2.8		7.5	131
	35	42		2.5	7.5
	42	38.2		2.8
80CWL-14	30	23	2950	3.7		5.5	124
	60	21		3.7	5.5
	72	19.7		3.8

Continued table

Type	voltage 380V Frequency 50Hz
	Main technical Performance parameters
	Capacity m³/h	Head m	Speed r/min	NPSHr m	Shaft power kW	Matched power kW	weight Pump Kg
80CWL-11	30	34.5	2950	2.2		7.5	132
	60	30		2.9	6.54
	72	27.2		3.6
80CWL-8	30	45	2950	3.7		11	192
	60	42		3.2	9.4
	72	38.8		3.1
80CWL-6	30	67.7	2950	2.8		18.5	224
	60	60		2.3	14.21
	72	54.4		2.7
80CWL-5.5	30	77.3	2950	2.6		22	260
	60	75		2.6	17.26
	72	73		2.8
100CWL-18	50	24.4	2950	3.6		11	154
	100	21		403	7.33
	120	17.8		4.9
100CWL-14	50	33.7	2950	2.5		15	213
	100	30		3.3	10.5
	120	27.5		3.8
100CWL-11	50	46.8	2950	2.5		18.5	242
	100	42		3.2	14.9
	120	37.5		3.7
100CWL-8	50	64.8	2950	3.0		30	255
	100	60		3.7	21.8
	120	57		4.5
100CWL-6	50	97	2950	2.6		37	350
	100	85		3.7	32.2
	120	71.5		4.6
100CWL-18	80	15.6	1450	2.8		11	286
	160	13		3.0	6.75
	192	11.2		3.4

Continued table

Type	voltage 380V Frequency 50Hz
	Main technical Performance parameters
	Capacity m³/h	Head m	Speed r/min	NPSHr m	Shaft power kW	Matched power kW	weight Pump Kg
200CWL-12	150	32.5	1450	1.9		37	493
	300	30		3.1	30.2
	360	28.3		3.7
200CWL-18	200	23.8	1450	2.3		30	472
	400	21		2.5	27.6
	480	16.8		2.7

Table2

Type	voltage 440V Frequency 60Hz
	Main technical Performance parameters
	Capacity m³/h	Head m	Speed r/min	NPSHr m	Shaft power kW	Matched power kW	weight Pump Kg
32CWL1-4	2.4	31.7	3540	5.9		2.2	72
	4.8	30.2		5.7	0.81
	5.7	29.5		5.7
32CWL1-3	2.4	44.6	3540	4.2		2.2	75
	4.8	43.2		3.5	0.81
	5.7	42.0		3.9
40CWL1-5	4.8	31.9	3540	6.2		2.2	60
	9.6	30.2		4.2	1.46
	11.5	28.8		4.3
40CWL1-4	4.8	46.5	3540	5.0		3.0	77
	9.6	43.2		3.6	2.26
	11.5	41.0		3.5
40CWL1-3	4.8	61.5	3540	4.2		4	100
	9.6	60.0		3.5	3.64
	11.5	59.0		4.1
50CWL1-6	7.2	31.8	3540	3.9		3.0	75
	14.4	30.2		2.8	2.0
	17.3	28.5		4.2

Continued table

Type	voltage 440V Frequency 60Hz
	Main technical Performance parameters
	Capacity m³/h	Head m	Speed r/min	NPSHr m	Shaft power kW	Matched power kW	weight Pump Kg
50CWL1-4.5	7.2	45.0	3540	8.4		4.0	97
	14.4	43.2		5.0	3.08
	17.3	40.0		4.6
50CWL1-4	7.2	62.5	3540	3.9		5.5	126
	14.4	60.4		4.8	4.47
	17.3	58.0		5.7
50CWL1-8	12.6	32.5	3540	3.1		4.0	90
	25.2	30.2		3.1	3.09
	30.2	27.4		3.6
50CWL1-7	12.6	48.0	3540	3.1		5.5	120
	25.2	43.2		3.4	4.71
	30.2	38.5		4.1
50CWL1-5	12.6	65.0	3540	7.0		7.5	130
	25.2	60.4		3.9	7.03
	30.2	56.5		4.3
50CWL1-3.5	12.6	92.0	3540	2.5		15	192
	25.2	86.0		3.2	10.73
	30.2	82.0		4.1
65CWL1-11	21.0	34.0	3540	4.9		7.5	126
	42.0	30.2		5.3	4.8
	50.4	27.8		5.6
65CWL1-8	21.0	47.0	3540	3.1		11	175
	42.0	43.2		3.4	7.06
	50.4	40		3.8
65CWL1-6	21.0	65.0	3540	3.9		15	189
	42.0	60.4		3.5	10.31
	50.4	55		3.9
80CWL1-14	36.0	33.0	3540	5.2		11	180
	72.0	30.2		5.2	7.59
	86.4	28.0		5.3
80CWL1-11	36.0	49.0	3540	3.1		15	190
	72.0	43.2		4.1	11.29
	86.4	39.0		5.0

Continued table

Type	voltage 440V Frequency 60Hz
	Main technical Performance parameters
	Capacity m³/h	Head m	Speed r/min	NPSHr m	Shaft power kW	Matched power kW	weight Pump Kg
80CWL1-8	36.0	64.5	3540	5.2		22	240
	72.0	60.4		4.5	16.22
	86.4	55.5		4.3
80CWL1-6	36.0	97.0	3540	3.9		30	350
	72.0	86.0		3.2	24.4
	86.4	78.0		3.8
80CWL1-5.5	36.0	111.0	3540	3.6		37	380
	72.0	108.0		3.6	29.80
	86.4	105.0		3.9
100CWL1-18	60	35.0	3540	5.0		15	212
	120	30.0		6.0	12.65
	144	25.5		6.9
100CWL1-14	60	48.5	3540	3.5		22	252
	120	43.2		4.6	18.10
	144	39.5		5.3
100CWL1-11	60	67.3	3540	3.5		37	365
	120	60.4		4.5	25.63
	144	54.0		5.2
100CWL1-8	60	93.0	3540	4.2		55
	120	86.4		5.2	37.65
	144	82.0		6.3
100CWL1-6	60	139.0	3540	3.6		75
	120	122.0		5.2	55.40
	144	102.0		6.4
150CWL1-18	96	22.4	1750	3.9		15	312
	192	18.7		4.2	11.64
	230	16.1		4.8
200CWL1-12	180	46.8	1750	2.7		55	530
	360	43.2		4.03	51.15
	432	40.5		5.2
200CWL1-18	240	34.2	1750	3.2		55	510
	480	30.2		3.5	47.00
	576	24.1		3.8