Product Description
Model Code Explanation

Product Description
CWB vortex magnetic pump (hereinafter referred to as the magnetic vortex pump) is a new type of centrifugal pump that applies the working principle of a permanent-magnet coupling. With a reasonable design and advanced manufacturing process, it features full sealing, zero leakage, low flow rate, high head and excellent corrosion resistance, reaching the advanced level of similar products abroad. By replacing dynamic seals with static seals, all wetted parts of the pump are in a completely sealed state, thoroughly eliminating the leakage problems (dripping, seepage, etc.) that are unavoidable with mechanical seals in other pumps. The CWB vortex magnetic pump adopts corrosion-resistant, high-strength engineering plastics, alumina ceramics and stainless steel as its main materials, thereby providing excellent corrosion resistance and ensuring that the conveyed medium remains free from contamination.
Product Features
The CWB vortex magnetic pump adopts a magnetic drive structure to ensure tight sealing of the pump, enabling leak-free transfer of corrosive, flammable, explosive and highly toxic chemical media.
1. High head and small flow rate; the specific speed is generally less than 40;
2. Simple structure, compact size and light weight;
3. The CWB vortex magnetic pump is equipped with a self-lubricating circulation path to extend the service life of the sliding bearings;
4. A dedicated cooling circuit is added to remove eddy-current heat from the magnetic coupling in time;
5. The CWB vortex magnetic pump uses cantilever blades to reduce the impeller radial force;
6. As the viscosity of the conveyed medium increases, the pump efficiency drops sharply; therefore, the medium viscosity should not exceed 5 × 10−6 m²/s.
Product Applications
The magnetic pump features a compact structure, attractive appearance, small footprint, low noise, reliable operation and convenient use and maintenance. It can be widely used in chemical, pharmaceutical and petroleum industries for handling acids, alkalis, oils, rare and precious liquids, toxic liquids and volatile liquids, as well as for supporting circulation water systems and filters. It is particularly ideal for transferring liquids that are prone to leakage, flammable or explosive—using this pump is the preferred solution in such applications.
Structure Diagram

|
1
|
Pump casing
|
9
|
Pump shaft
|
|
2
|
Impeller
|
10
|
Inner magnetic rotor
|
|
3
|
Pump cover
|
11
|
Inner rotor nut
|
|
4
|
Impeller nut
|
12
|
Containment shell
|
|
5
|
Thrust ring
|
13
|
Outer magnet assembly
|
|
6
|
Sealing ring
|
14
|
Mounting bracket
|
|
7
|
Sliding bearing sleeve
|
15
|
Motor
|
|
8
|
Shaft sleeve
|
Performance Parameters
|
Model
|
Flow Q
(m³/h) |
Head
(m) |
Speed n
(r/min) |
Efficiency η
(%) |
Motor power
(kW) |
|
CWB20-20
|
0.72
|
20
|
2900
|
22
|
1.1
|
|
CWB20-40
|
0.72
|
40
|
2900
|
18
|
1.1
|
|
CWB20-65
|
0.72
|
65
|
2900
|
15
|
2.2
|
|
CWB25-25
|
1.44
|
25
|
2900
|
26
|
1.1
|
|
CWB25-40
|
1.44
|
40
|
2900
|
24
|
1.5
|
|
CWB25-75
|
1.44
|
75
|
2900
|
20
|
4
|
|
CWB32-30
|
2.88
|
30
|
2900
|
28
|
2.2
|
|
CWB32-50
|
2.88
|
50
|
2900
|
26
|
3
|
|
CWB32-75
|
2.88
|
75
|
2900
|
22
|
5.5
|
|
CWB32-120
|
2.88
|
120
|
2900
|
18
|
7.5
|
|
CWB40-40
|
5.4
|
40
|
2900
|
30
|
5.5
|
|
CWB40-90
|
5.4
|
90
|
2900
|
26
|
11
|
|
CWB50-45
|
9
|
45
|
2900
|
30
|
7.5
|
|
CWB65-50
|
14.4
|
50
|
2900
|
35
|
15
|
|
Note: Wetted parts are available in 304, 304L, 316 and 316L; non-standard magnetic vortex pumps can be customized according to customer requirements.
|
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OEM & Custom Solutions
Chaodun Pump provides OEM/ODM customization for CWB Vortex Magnetic Pumps, including head, flow, voltage, and material selection. All products meet ISO9001 and CE standards for international export and chemical industry use.
FAQs for Oversea Buyers
Q1: What is the CWB Vortex Magnetic Pump used for?
It is designed for transferring corrosive, volatile, flammable, or toxic liquids with high head and small flow.
Q2: What materials are available?
Engineering plastics, ceramics, and stainless steel (304, 316, 316L) to suit various chemicals.
Q3: Can it handle viscous liquids?
Suitable for liquids with viscosity below 5×10⁻⁶ m²/s; efficiency drops for thicker media.
Q4: What is its main advantage?
Compact structure, high head, no leakage, and magnetic transmission with zero contamination.
Q5: Does it require cooling?
Yes, an internal cooling circuit removes magnetic eddy current heat.
Q6: What industries commonly use this pump?
Chemical, pharmaceutical, petroleum, filtration, and circulation systems.
Q7: Does Yitie Pump offer OEM customization?
Yes, custom materials, voltage, and flow specifications are available for export projects.