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CDL Series Vertical Multistage Centrifugal Pump


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CDL series multistage pump is non-self-priming vertical multistage centrifugal pump, designed and manufactured by incorporating advanced technologies. It features a standard vertical motor and a quick-install mechanical seal, making replacement extremely convenient. The pump's wet parts are all made of stainless steel (304/316), allowing it to handle mildly corrosive media. It can serve as a replacement for similar series such as CR and CRN. Since its introduction to the market, the product has gained recognition for its high efficiency, energy savings, reliable quality, and wide range of applications.

Model:
CDL
Brand:
SRM

Product Description

FAQ

This l pump features a compact integrated design, small size, lightweight, low noise, significant energy savings, and easy maintenance. Equipped with a standard vertical motor and quick-install mechanical seal, replacement is highly convenient. The pump's wet parts are constructed from stainless steel (304/316), making it suitable for mildly corrosive media.

Key Features

Optimized Hydraulic Design – Utilizes an advanced hydraulic model and precision manufacturing to enhance performance and service life.
Reliable Shaft Seal – Hard alloy and fluoro-rubber mechanical seals improve operational reliability and allow handling of higher-temperature media.
Corrosion-Resistant Construction – Stainless steel (304/316) stamped and welded wet parts ensure compatibility with mildly corrosive fluids.
Compact & Efficient – Space-saving design, lightweight, low noise, energy-efficient, and easy to maintain.
Inline Installation – Suction and discharge ports are on the same horizontal plane for direct pipeline integration.
Standard Motor Compatibility – Users can easily configure the motor as needed
Optional Smart Protector – Provides safeguards against dry running, phase loss, and overload ( customizable upon request).

Technical Parameters

Preformance limits

Max.Working pressure: 10bar

To avoid overload and danger the pump should beoperated within the performance ranges.

Media temperature:

With NBR/ceramic/carbon: -20℃~+80℃

With Viton/ceramic/carbon: -20℃~+110℃

With silicone rubber/ceramic/carbon: -20℃~+110℃

MOTOR

E.F.C, continuous duty insulation class: F

Protection class:IP55 Three phase:380V,50Hz,Speed: 2900rpm

SYMBOLS

CDL 2 20

Model	Size(mm)					Weight(kg)
Model	B1	B2	B1+B2	D1	D2	Weight(kg)
CDL2-20	258	225	483	148	117	24
CDL2-30	276	225	501	148	117	24
CDL2-40	294	225	519	148	117	25
CDL2-50	312	225	537	148	117	26
CDL2-60	340	245	585	170	142	30
CDL2-70	358	245	603	170	142	30
CDL2-90	394	245	639	170	142	33
CDL2-110	430	245	675	170	142	34
CDL2-130	476	290	766	190	155	40
CDL2-150	512	290	802	190	155	42
CDL2-180	566	290	856	190	155	46
CDL2-220	638	290	928	190	155	47
CDL2-260	720	345	1065	197	155	53

Performance Charter

CDL2 PERFORMANCE DATA 2900rpm
MODEL	Power		Capacity
Three phase 380V 50Hz	KW	HP	m³h	1.0	1.5	2.0	2.5	3.0	3.5
			Q l/min	16.7	25	33.3	41.7	50	58.3
			Head(m)
CDL2-20	0.37	0.5	H(m)	16	15.5	15	14	12.5	10.5
CDL2-30	0.37	0.5		24	23	22	20	19	16
CDL2-40	0.55	0.75		32.5	31	29.5	27.5	25.5	21
CDL2-50	0.55	0.75		41	39	36.5	34	31	26
CDL2-60	0.75	1.0		52	50	47	43	39	33
CDL2-70	0.75	1.0		60	58	53	50	45	39
CDL2-90	1.1	1.5		78	74	69	63	58	46
CDL2-110	1.1	1.5		96	91	85	80	72	57
CDL2-130	1.5	2.0		112	107	100	90	81	69
CDL2-150	1.5	2.0		130	124	114	104	93	77
CDL2-160	2.2	3.0		137	132	122.5	112	103	82
CDL2-170	2.2	3.0		147	140	129	119	109	87
CDL2-180	2.2	3.0		156	149	138	130	114	93
CDL2-190	2.2	3.0		163	156	144.5	133	119.5	97
CDL2-200	2.2	3.0		172	164	152	140	128	104
CDL2-220	2.2	3.0		185	173	165	150	140	112
CDL2-230	3.0	4.0		198	188	175	161	147	117
CDL2-240	3.0	4.0		206	196	182.5	168	154	123
CDL2-260	3.0	4.0		217	203	194	176	165	135

CDL4 PERFORMANCE DATA 2900rpm
MODEL	Power		Capacity
Three phase 380V 50Hz	KW	HP	Q m³h	2	3	4	5	6	7	8
			l/min	33.3	50	66.7	83.3	100	116.7	133.3
			Head(m)
CDL4-20	0.37	0.5	H(m)	18	17	16	15	14	10	6
CDL4-30	0.55	0.75		26	25	24	22.5	20	12	7.5
CDL4-40	0.75	1.0		35	33.5	32	29.5	26.5	16	10
CDL4-50	1.1	1.5		43	40	37	33	28	23	12
CDL4-60	1.1	1.5		52	50	45	41	34	25	14
CDL4-70	1.5	2.0		61	58	53	47.5	40	28	18
CDL4-80	1.5	2.0		70	66.5	61	54	46	32	21
CDL4-100	2.2	3.0		86	80	74	66	56	41	23
CDL4-120	2.2	3.0		105	99	91	82	68	47	27
CDL4-130	2.2	3.0		114	107	97.5	87	74	53	31
CDL4-140	2.2	3.0		123	116	106	93	79	56	33.5
CDL4-150	3.0	4.0		131	124	112.5	100	85.5	61	36
CDL4-160	3.0	4.0		142	133	122	111	93.	67	38
CDL4-170	4.0	5.5		149	140	127.5	114	97	70	41
CDL4-180	4.0	5.5		158	149	135	121	103	74	43
CDL4-190	4.0	5.5		166	157	143	127.5	111	78	47
CDL4-200	4.0	5.5		175	165	150	134	115	82	49
CDL4-210	4.0	5.5		184	173	157.5	141	120	86	51
CDL4-220	4.0	5.5		190	180	164	146	124	91	54

CDL8 PERFORMANCE DATA 2900rpm
MODEL	Power		Capacity
Three phase 380V 50Hz	KW	HP	m³/h	5	6	7	8 9		10	11	12
			Q l/min	83	100	117	133	150	167	183	200
							Head(m)
CDL8-20	0.75	1.0	H(m)	20	19.5	19	18	17	16	14	13
CDL8-30	1.1	1.5		30	29.5	28.5	27	25	24	21	19
CDL8-40	1.5	2.0		41	39.5	38	36	34	32	28	26
CDL8-50	2.2	3.0		52	50	48	45	42	40	36	32
CDL8-60	2.2	3.0		62	60	57	54	51	48	43	39
CDL8-70	3.0	4.0		72	70	68	65	61	57	51	46
CDL8-80	3.0	4.0		83	80	77	73	69	65	58	52
CDL8-90	3.0	4.0		93	90.5	87	84	78	73	66	60
CDL8-100	4.0	5.5		104	100	97	92	87	81	73	65
CDL8-110	4.0	5.5		113	110	107	102	96	89	80	73
CDL8-120	4.0	5.5		124	120	116	111	104	92	87	78
CDL8-130	5.5	7.5		134	130.5	126	121	113	105	95	86
CDL8-140	5.5	7.5		145	141	136	130	122	113	102	92
CDL8-150	5.5	7.5		154.5	150	145.5	140	131	121.5	110	99
CDL8-160	5.5	7.5		166	161	156	148	139	130	118	106
CDL8-170	7.5	10		175	170	165	158	148	138	124	112
CDL8-180	7.5	10		187	182	175	167	157	146	134	120
CDL8-190	7.5	10		196	191	184	177	165	154	139	126
CDL8-200	7.5	10		208	202	195	186	175	163	150	135

Application Scenarios

Water Supply

Water plant filtration and transportation

Zoned water distribution in water plants

Main pipeline pressure boosting

High-rise building water pressure boosting

Industrial Pressure Boosting

Process water systems

Cleaning systems

High-pressure washing systems

Firefighting systems

Industrial Fluid Transfer

Cooling and HVAC systems

Boiler feed water and condensation systems

Machine tool integration

Acidic and alkaline media transfer

Water Treatment

Ultra filtration (UF) systems

Reverse osmosis (RO) systems

Distillation systems

Separators and swimming pool filtration systems

Irrigation

Farmland irrigation

Sprinkler irrigation

Drip irrigation

FAQs

What media is this pump suitable for?

1. Thin, clean, non-flammable, and non-explosive fluids-Free of solid particles or fibers.
2. Purified liquids-Such as mineral water, softened water, purified water, light oils, and other mild chemical solutions.
3. Mildly corrosive media-The pump's stainless steel construction allows for handling slightly corrosive fluids.
(Note: The translation maintains technical accuracy while improving readability. Adjustments can be made for specific terminology preferences.)
What Makes SRM Pumps Different?

With over 40 years of expertise in professional pump manufacturing, SRM Group—a Top 500 Enterprise in China—stands out for its:
Mature Production System – Rigorous quality control ensures reliable, high-performance pumps.
Customer-Centric Approach – We customize solutions to meet specific needs.
End-to-End Support – Beyond a 1-year warranty, we provide ongoing service assistance.
Choose SRM for durable, tailored pumping solutions backed by decades of industry leadership.
How to Purchase SRM Pumps?

Purchasing SRM pumps is simple:
Contact Us – Visit our website and reach out via:
Email Phone Social Media DM
(A dedicated representative will assist you promptly.)
Can I Use My Own Logo?

Custom Branding Option – We support OEM/ODM services and can produce pumps with your logo, provided you:
Own the trademark OR
Have authorization from the trademark owner.