CQZ Series Stainless Steel Self Priming Pump
The CQZ Stainless Steel Self-Priming Pump is a specialized centrifugal pump that combines magnetic drive technology with self-priming functionality. It replaces the traditional dynamic seal design with a static seal, ensuring a completely sealed pump flow path and eliminating the risk of media leakage.
The CQZ Self-Priming Pump is widely used for transporting corrosive media in chemical, pharmaceutical, electroplating, and environmental protection industries. It is particularly suitable for handling flammable, explosive, toxic, or valuable liquids, serving as an energy-efficient, safe, and reliable fluid transfer solution.
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Flow Rate Range : |
3m³/h ~ 800m³/h |
|---|---|
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Head Range: |
12.5 m ~ 130 m |
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Motor Power : |
1.5 kw ~ 160 kw |
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Speed: |
968 ~ 3450 r/min |
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Medium Temperature Range: |
-120℃~320℃ |
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Customizable Materials: |
304、304L、316L、2205/904L、TA2、HC276 |
What is a Stainless Steel Self-Priming Pump
Changyu’s CQZ stainless steel self-priming pump is a stainless steel self-priming magnetic drive pump designed and manufactured to combine the advantages of stainless steel pumps, self-priming pumps, and magnetic drive pumps., with wetted components made of stainless steel (304, 316L, duplex steel, titanium, etc.). The key difference from standard centrifugal pumps is that it does not require priming or a foot valve before startup（The pump must be primed during the initial startup, For instructions on how to prime the pump, please read: How to Prime a Centrifugal Pump）. The pump’s internal self-priming structure evacuates air from the suction line and draws in liquid automatically.
The CQZ series integrates magnetic drive technology with the following specific features:
- Self-Priming Principle: The impeller rotates at high speed, creating negative pressure inside the pump chamber. Air from the suction line is evacuated. Once air is removed, liquid enters the pump chamber and delivery begins.
- Seal Type: Static seal replaces traditional mechanical seal. The outer magnet drives the inner magnet. The isolation sleeve fully contains the pumped medium inside the pump chamber. No dynamic seal points exist.
- Material Options: Pump casing, impeller, isolation sleeve and other wetted parts can be selected from 304, 304L, 316L, 2205, 904L, TA2, HC276 to suit different corrosive media.
- Temperature Range: -120°C to 320°C (depending on material configuration).
- Performance Range: Flow rate 3~800 m³/h, head 12.5~130 m, motor power 1.5~160 kW.
Comparison with conventional pumps:
| Item | Mechanical Seal Centrifugal Pump | CQZ Stainless Steel Self-Priming Pump |
|---|---|---|
| Priming required before startup | Yes | No |
| Seal type | Dynamic seal (mechanical seal) | Static seal (isolation sleeve) |
| Leakage risk | Yes (seal wear) | None |
| Suitable media | Limited by seal compatibility | Corrosive, flammable, toxic, high-purity media |
| Self-priming capability | No (requires foot valve or priming) | Yes |
Typical applications: Chemical, pharmaceutical, electroplating, and environmental protection industries for transferring acids, alkalis, organic solvents, electroplating solutions, wastewater treatment chemicals, and other media. Particularly suitable for applications requiring zero leakage and no priming.
For sizing based on specific operating conditions (medium, temperature, self-priming height, flow rate, head), provide parameters for a configuration recommendation.
Applications of Stainless Steel Self Priming Pump
The CQZ series is designed for applications requiring leak-free operation, self-priming capability, and corrosion resistance. Built with magnetic drive (static seal), stainless steel wetted parts, and self-priming structure. No mechanical seal, no priming required before startup.
Compatible Media:
Sulfuric acid, hydrochloric acid, nitric acid, phosphoric acid, acetic acid, sodium hydroxide, sodium hypochlorite, organic solvents (acetone, ethanol, methanol), electroplating solutions (nickel, chromium, copper), pharmaceutical intermediates, high-purity chemicals, dye solutions, wastewater containing chemical reagents, brine, weak acid/alkali process liquids, and other corrosive or hazardous fluids.
Chemical & Petrochemical
Transfer of acids, alkalis, organic solvents, and volatile chemicals. Suitable for flammable, explosive, or toxic media where zero leakage is required.
Pharmaceutical Industry
Transfer of high-purity pharmaceutical solutions, intermediates, and solvents. Static seal design prevents contamination.
Electroplating & Surface Finishing
Circulation and transfer of electroplating solutions (nickel, chromium, copper, zinc), pickling baths, and rinsing water. Corrosion-resistant materials handle aggressive chemistries.
Food & Fine Chemical
Transfer of food additives, flavorings, and high-value liquids where leakage is unacceptable and material purity must be maintained.
For applications not listed above or requiring specific operating conditions:
Contact ChangYu Pump for a solution tailored to your actual media composition, temperature, self-priming height, flow rate, head, and material requirements.
Need a quick answer or a tailored quote? Our team responds within 24 hours with one-on-one support.
Email: [email protected]
WhatsApp: +86-13651913727
Components and Specifications of the Stainless Steel Self-Priming Pump
Parts of Stainless Steel Self Priming Pump
The CQZ Stainless Steel Self Priming Pump primarily consists of a magnetic drive assembly (inner and outer magnet assemblies), pump body, impeller, isolation sleeve, and supporting structural components. The magnetic drive system enables non-contact power transmission. The impeller and flow passages are constructed from corrosion-resistant materials. The isolation sleeve positioned between the inner and outer magnets creates a fully sealed environment, ensuring zero leakage of the pumped medium.erent configuration, provide an accurate solution. Technical consulting, please contact us!
Working Principle
The working principle of the CQZ magnetic self-priming pump is based on magnetic coupling transmission for non-contact power transfer. The motor drives the outer magnetic steel assembly to rotate. The magnetic field penetrates the isolation sleeve, driving the inner magnetic steel and impeller to rotate synchronously. During the self-priming phase, the high-speed rotation of the impeller creates a vacuum within the pump chamber, automatically drawing in liquid and completing the delivery process.
Specifications
| Model | Flow (m³/h) | Head (m) | Efficiency (%) | Motor Power (kW) | Speed (rpm) | Inlet (mm) | Outlet (mm) |
|---|---|---|---|---|---|---|---|
| Small Flow / High Speed (2900 rpm) | |||||||
| 32-20-125 | 3.2 | 20 | 16 | 1.5 | 2900 | 32 | 20 |
| 32-20-160 | 3.2 | 32 | 15 | 2.2 | 2900 | 32 | 20 |
| 40-25-160 | 6.3 | 32 | 23 | 3.0 | 2900 | 40 | 25 |
| 50-32-200 | 12.5 | 50 | 30 | 7.5 | 2900 | 50 | 32 |
| 65-50-125 | 25 | 20 | 41 | 4.0 | 2900 | 65 | 50 |
| 65-40-250 | 25 | 80 | 24 | 30 | 2900 | 65 | 40 |
| Medium Flow / High Speed (2900 rpm) | |||||||
| 80-65-125 | 50 | 20 | 56 | 5.5 | 2900 | 80 | 65 |
| 80-50-250 | 50 | 80 | 38 | 37 | 2900 | 80 | 50 |
| 100-80-160 | 100 | 32 | 47 | 22 | 2900 | 100 | 80 |
| 100-65-250 | 100 | 80 | 51 | 55 | 2900 | 100 | 65 |
| 125-100-200 | 200 | 50 | 59 | 55 | 2900 | 125 | 100 |
| Large Flow / Low Speed (1450 rpm) | |||||||
| 150-125-250 | 200 | 20 | 51 | 22 | 1450 | 150 | 125 |
| 150-125-400 | 200 | 50 | 56 | 55 | 1450 | 150 | 125 |
| 200-150-250 | 400 | 20 | 68 | 37 | 1450 | 200 | 150 |
| 200-150-400 | 400 | 50 | 52 | 110 | 1450 | 200 | 150 |
| 250-200-400 | 600 | 50 | 47 | 185 | 1450 | 250 | 200 |
Features of Stainless Steel Self Priming Pump
- Leak-Free Static Seal Design: Replaces traditional dynamic seals with a static seal structure, ensuring complete sealing of flow-through components and eliminating leakage issues common in mechanical seal pumps.
- Compact and Space-Saving: Features a compact, space-efficient design that saves installation space while maintaining an aesthetically pleasing appearance, making it ideal for applications with layout and visual requirements.
- Low-Noise and Smooth Operation: Operates with minimal noise and vibration, enhancing equipment longevity and reliability.
- Strong Self-Priming Capability and Simple Operation: Eliminates the need for foot valves or priming water. Excellent self-priming performance allows rapid liquid suction upon startup, significantly simplifying operational procedures.
- Easy Maintenance and Reliable Operation: Rational structure with low failure rate requires minimal routine maintenance. Ensures stable, long-term operation and reduces overall operating costs.
- Corrosion-Resistant Materials: Flow-through components are constructed from high-quality corrosion-resistant stainless steel, suitable for conveying various chemical media including acids, alkalis, and organic solvents.
Custom Stainless Steel Self Priming Pump
To provide you with an accurate quote and optimal solution, please supply the following technical information:
Medium Properties: Specify the exact name, concentration, temperature, viscosity, and particle content (particle size and concentration) of the conveyed medium.
Operating Parameters: Flow Rate: ____ m³/h, Head: ____ m, Self-priming Height: ____ m
Operating Conditions: Working Temperature ___℃; Inlet Pressure ___MPa; Installation Environment (Indoor/Outdoor, explosion-proof requirements, etc.).
Material Requirements: Based on the corrosiveness of the medium, specify material preferences for wetted components such as the pump body and isolation sleeve (e.g., 304, 316L, Hastelloy, etc.).
Required Connections: Inlet diameter: _____, Outlet diameter: _____
Connection method: (e.g., flange standard, thread specification).
By providing the above information, Contact Us, our engineers will tailor a customized solution and provide a prompt quotation.
China Stainless Steel Self Priming Pump Manufacturer & Factory
Changyu is a Stainless Steel Self Priming Pump manufacturer and factory, specializing in the production of high-quality self-priming magnetic drive pumps with excellent corrosion resistance and reliable performance. Equipped with advanced production facilities and a dedicated technical team, we ensure strict quality control and consistent product stability. Our company is certified to the ISO 9001 international quality management system, and our products comply with CE, ATEX, EAC, and API standards. Changyu also holds 25 invention patents.
We have enough inventory for quick delivery and offer customized design services, including parameters such as head, flow rate, material composition, motor specifications, sealing methods, and installation configurations to meet different operating conditions. Contact our team for customized solutions and highly competitive quotes.
Email: [email protected]
WhatsApp: +86-13651913727
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