About Pump CVM
Cast iron vertical multistage centrifugal pump, with glass fibre reinforced technopolymer stages and cast iron base. Equipped as standard with counterflanges, it is suitable for pressure increases in general.
Features
- Pump supplied with counterflanges
- Easy maintenance
- Silent
- Practical and easy to use
description Pump CVM
Cast iron vertical multistage centrifugal pump, with glass fibre reinforced technopolymer stages and cast iron base. Counterflanges are fitted as standard.
Quiet and easy to maintain, it is suitable for residential use.
For further technical information see the Databook
- Pressure boosting
- Pressure boosting systems
- Irrigation
- Washing systems
- Clean water handling
Overview of technical data CVM
| Flow rate | Up to 7.2 m³/h |
| Total head | Up to 6.4 m |
| Max. working pressure | 11 bar |
| Max. temperature of the liquid | +40°C |
| MEI | > 0.4 |
| Poles | 2 |
| Insulation class | F |
| Protection degree | IP44 |
| Voltage | Single-phase 1~230V ±10% Three-phase 3~230/400V ±10% |
Material Pump CVM
| Pump body | Cast iron |
| Impeller | PPE+PS with glass fibres |
| Shaft | Stainless steel 416 (EN 1.4005) |
| Mechanical seal | Ceramic/Carbon/NBR (standard) |
| Motor support | Cast iron |
pump CVM
PERFORMANCE CURVE SPECIFICATIONS
The specifications below qualify the curves shown on the following pages.
Tolerances according to ISO 9906 Annex A
The curves refer to effective speed of asynchronous motors at 50 Hz
Measurements were carried out with clean water at 20°C of temperature and with a kinematic viscosity
of = 1 mm2/s (1 cSt)
The NPSH curve is an average curve obtained in the same conditions of performance curves.
The continuous curves indicate the recommended working range. The dotted curve is only a guide.
In order to avoid the risk of over-heating, the pumps should not be used at a flow rate below 10% of best efficiency point.
Symbols explanation:
Q = volume flow rate
H = total head
P2 = pump power input (shaft power)
= pump efficiency
NPSH = net positive suction head required by the pump
MEI = minimum efficiency index
The minimun efficiency index (MEI) is a measure of the quality of a pump size in respect to its mean efficiency. The minimum efficiency index is based on the hydraulic efficiency and on the head at the best efficiency point.
The efficiency of a pump with trimmed impeller is usually lower than that of a pump with the full impeller diameter. The trimming of the impeller will adapt the pump to a fixed duty point, leading to reduced energy consumption. The minimum efficiency index (MEI) is based on the full impeller diameter.
The operation of these water pumps with variabile duty points may be more efficient end economic when controlled, for example, by the use of a variable speed drive that matches the pump duty to the system
Technical
- Total head from 98.5 to 6.4 m
- Capacity from 1.2 to 7.2 m3/h
- Hydraulic efficiency index MEI > 0.4
- IE3 high efficiency motors starting from 0.75 kW
- Liquid temperature up to +40°C
- Protection with automatic re-set incorporated for the single phase mode
The EBARA CVM electric pump is a vertical multistage for residential use.
The hydraulic components are made of glass fibre reinforced plastic, while
the mechanical seal is made of Ceramic/Carbon/NBR.
- The MEI hydraulic efficiency index> 0.4 and the 0.75 kW IE3 motors make them compliant with the relevant European Directives.
- To provide an even more complete product, the CVM models are also available as standard already combined with the E-drive inverter, which allows the optimal setting and operation according to requirement, ensuring the reduction of operating costs.
| Q=Capacity | Motor Power | Pump type | |||||||||||
| 120 | 100 | 80 | 60 | 50 | 40 | 30 | 20 | 0 | l/min | HP | KW | Three phase | Single phase |
| 7.8 | 6 | 4.8 | 3.6 | 3 | 2.4 | 1.8 | 1.2 | 0 | m/h | ||||
H=Total manometric head in meters | |||||||||||||
– | – | 6.4 | 13 | 15.6 | 17.8 | 19.7 | 21.2 | 23.8 |
| 0.4 | 0.3 | CVM A/4 | Cvm AM/4 |
– | – | 9.6 | 19.4 | 23.3 | 26.7 | 29.5 | 31.8 | 35.7 |
| 0.6 | 0.44 | CVM A/6 | Cvm AM/6 |
– | – | 12.8 | 25.9 | 31.1 | 35.6 | 39.4 | 42.5 | 47.5 |
| 0.8 | 0.6 | CVM A/8 | Cvm AM/8 |
– | – | 19.5 | 36.6 | 43.5 | 49.5 | 54 | 57.5 | 62.5 |
| 1 | 0.75 | CVM A/10 | Cvm AM/10 |
– | – | 23.4 | 44 | 52.5 | 59.5 | 65 | 69.0 | 75.0 |
| 1.2 | 0.9 | CVM A/12 | Cvm AM/12 |
– | – | 27.3 | 51 | 61 | 69.5 | 75.5 | 80.5 | 87.5 |
| 1.5 | 1.1 | CVM A/15 | Cvm AM/15 |
– | – | 28.8 | 58.5 | 70 | 80 | 88 | 94.5 | 103 |
| 1.8 | 1.3 | CVM A/18 | Cvm AM/18 |
14.7 | 21.6 | 27.5 | 32 | 33.7 | 35.1 | 36.2 | – | 38.1 |
| 1 | 0.75 | CVM B/10 | Cvm AM/10 |
19.6 | 28.8 | 36.6 | 42.6 | 45 | 46.8 | 48 | – | 51 |
| 1.2 | 0.9 | CVM B/12 | Cvm AM/12 |
24.5 | 36 | 45.8 | 53.3 | 56.2 | 58.5 | 60.5 | – | 63.5 |
| 1.5 | 1.1 | CVM B/15 | Cvm AM/15 |
30.6 | 44.5 | 56 | 65.5 | 69 | 72 | 74 | – | 78.5 |
| 2 | 1.5 | CVM B/20 | Cvm AM/20 |
35.7 | 51.5 | 65.5 | 76.5 | 80.5 | 84 | 86 | – | 91.5 |
| 2.3 | 1.7 | CVM B/23 | Cvm AM/23 |
41.0 | 59 | 74.5 | 87 | 92 | 96 | 98.5 | – | 105 |
| 2.5 | 1.85 | CVM B/25 | – |
