CVI INOX 20-3 T – vertical stainless steel industrial centrifugal pump
The IPRO CVI 20-3 T INOX is a vertical, multistage centrifugal pump with in-line ports, designed for precise selection of the operating point in systems requiring consistent performance and low noise levels. The impeller, diffuser, and all hydraulic components in contact with the pumped liquid are made of AISI 304 stainless steel, while the IE3-efficiency-class three-phase motor complies with current energy efficiency requirements for industrial drives. The in-line design allows installation directly in the pipeline axis, without the need to redesign the system.
Who it’s for
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Large commercial and public buildings – hotels, hospitals, and shopping centers benefit from a reliable water supply at a flow rate of around 333 l/min.
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Industrial installers – the pump is suitable for extensive pressure-boosting systems serving large buildings.
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Manufacturing plants – cooling and process circuits in plants with high water demand benefit from the pump’s stable operation.
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Fire protection systems – high capacity and head support sprinkler systems in large buildings.
Applications
The IPRO CVI 20-3 T INOX pump is designed to pump clean liquids that are chemically non-aggressive in domestic water supply systems for large commercial and public buildings. W In industrial settings, it is suitable for high-pressure circulation systems, air conditioning and refrigeration systems, and fire protection systems.
W In industry, the pump is used to supply boiler rooms and in machine cooling systems, while in agriculture it is used to irrigate large areas. Selecting the right variant requires taking into account the NPSH characteristics of the suction system to avoid the risk of cavitation. The CVI 20-3 T INOX industrial pump operates on a three-phase power supply.
CVI 20-3 T INOX features – design and technical specifications
The CVI 20-3 T INOX pump design is based on the precise selection of materials according to the function of each component. The pump head and base, as load-bearing components that do not come into direct contact with the pumped medium, are made of ASTM25B cast iron, ensuring structural rigidity. The pump shaft is made of AISI 431 stainless steel, selected for its high mechanical strength. All hydraulic components in contact with the medium—the inlet, outlet, impeller, diffuser, pump casing, discharge port and cover—are made of AISI 304 stainless steel. The neck ring is made of PTFE, and the O-ring seals are made of EPDM/FKM. The cartridge mechanical seal (silicon carbide / tungsten carbide / EPDM) is designed for operation in the 10–90°C range.
The motors driving the CVI 20-3 T INOX cover a power range of 4 to 7.5 kW, depending on the selected head variant, and belong to efficiency class IE3, in accordance with the EU ecodesign regulation. The flange connection is DN50.
| Motor power (kW) |
Power supply (V) |
Current draw Δ/Y (A) |
cos φ |
Efficiency (%) |
| 0,37 |
230 / Y400 |
1,6 / 0,9 |
0,81 |
73,8 |
| 0,55 |
230 / Y400 |
2,1 / 1,2 |
0,82 |
77,8 |
| 0,75 |
230 / Y400 |
2,8 / 1,6 |
0,82 |
80,7 |
| 1,1 |
230 / Y400 |
4,0 / 2,3 |
0,83 |
82,7 |
| 1,5 |
230 / Y400 |
5,3 / 3,0 |
0,84 |
84,2 |
| 2,2 |
230 / Y400 |
7,6 / 4,4 |
0,85 |
85,9 |
| 3 |
230 / Y400 |
9,9 / 5,7 |
0,87 |
87,1 |
| 4 |
400 / Y690 |
7,5 / 4,3 |
0,88 |
88,1 |
| 5,5 |
400 / Y690 |
10,0 / 5,9 |
0,88 |
89,2 |
| 7,5 |
400 / Y690 |
13,5 / 7,8 |
0,88 |
90,1 |
| 11 |
400 / Y690 |
19,6 / 11,3 |
0,89 |
91,2 |
| 15 |
400 / Y690 |
26,5 / 15,3 |
0,89 |
91,9 |
| 18,5 |
400 / Y690 |
32,5 / 18,8 |
0,89 |
92,4 |
Current draw values are confirmed by nameplates and verified documentation; cos φ and efficiency are taken from the technical documentation for IE3-class motors and are indicative.
- Pump type: vertical, multistage, centrifugal, in-line port configuration
- Power supply: 3~400 V / 3~690 V, 50 Hz
- Motor efficiency class: IE3
- Flow rate: 20 m³/h for the entire CVI 20 series
- Insulation class: F
- Protection rating: IP55
- Pumped liquid temperature range: -20°C to 90°C
- Max. ambient temperature: 40°C
- Pumped liquid pH range: 3–9
- Max. operating pressure: 25 bar
- Flange connection: DN50
- Rotational speed: 2900 rpm
IPRO - 36 months (3 years) of manufacturer’s warranty. Warranty and post-warranty service is provided by Dambat.
Dambat – a trusted manufacturer of pumps and water engineering equipment with quality certifications.
Frequently asked questions (FAQ) – CVI 20-3 T INOX vertical pump
What industrial applications is the CVI 20-3 T INOX pump suitable for?
The IPRO CVI 20-3 T INOX pump is used in high-pressure circulation systems, air conditioning and refrigeration systems, fire protection systems, boiler room supply systems, and domestic water supply systems.
Why are the head and base of the CVI 20-3 T INOX pump made of cast iron if it is an "INOX" pump?
The INOX designation applies to the parts in direct contact with the pumped medium - the impeller, diffuser, casing, inlet, and outlet - which are made of AISI 304 stainless steel. The pump head and base provide structural support and do not come into contact with the liquid, so they are made of ASTM25B cast iron to ensure adequate structural rigidity.
What is the IE3 efficiency class, and why does it matter when selecting a pump?
IE3 is an energy efficiency class for electric motors, in accordance with the EU Ecodesign Regulation. Higher efficiency means lower operating costs during continuous operation, which is particularly important in industrial installations operating in S1 mode.
What liquids can the CVI 20-3 T INOX pump?
The pump is designed for clean, chemically non-aggressive liquids with temperatures from -20°C to 90°C (up to 104°C by special order) and a pH range of 3–9.
What flow rate does the CVI 20-3 T offer?
The number at the beginning of each model designation in the series corresponds to the pump’s nominal flow rate class - for the CVI 20-3 T, this is 20 m³/h, or approximately 333 l/min. This flow rate is suitable for large commercial and public facilities, as well as manufacturing plants, although it is still below the scale of the largest industrial plants and main water supply networks.
Where can I buy the CVI 20-3 T vertical pump?
Dambat does not sell directly to customers. The CVI 20-3 T INOX pump is available from our sales partners, plumbing wholesalers, and authorized online distributors.
Does the IPRO CVI 20-3 T INOX pump come with a manufacturer’s warranty?
IPRO - 36 months (3 years) of manufacturer’s warranty. Warranty and post-warranty service is provided by Dambat.
