Ebara CVM Multistage Centrifugal Pumps - Data Book 60Hz
Japanese Technology since 1912
Specifications
The Ebara CVM series pumps are designed for various liquid handling applications. Key specifications include:
| Liquid Handled | Clean water |
| Temperature | min.+5 °C, max.+40 °C |
| Maximum working pressure | 1.1 MPa |
| Impeller | Closed centrifugal |
| Shaft seal type | Mechanical seal |
| Bearing | Sealed ball bearing |
| Pipe Connection (Suction) | G 1"1/4 |
| Pipe Connection (Discharge) | G 1"1/4 |
| Casing Material | Cast iron |
| Impeller Material | PPE+PS Glass fibre reinforced |
| Shaft Seal Material | Ceramic/Carbon/NBR |
| External pump casing Material | AISI 304 |
| Shaft Material | AISI 416 |
| Stages Material | PPE+PS Glass fibre reinforced /PTFE |
| Diffuser Material | PPE+PS Glass fibre reinforced |
| Bracket Material | Cast iron |
| Applicable standard of test | ISO 9906:2012 - Grade 3B |
Motor Specifications
| Type | Single Phase / Three Phase (Electric - TEFC) |
| Efficiency level (Reg.1781/2019) | IE2 / IE3 |
| No. of Poles | 2 |
| Rotation speed | ≈ 3450 min-1 |
| Insulation Class | F |
| Protection degree | IP 44 |
| Power rating | 0.3 to 1.7 kW (Single Phase) / 0.3 to 1.85 kW (Three Phase) |
| Frequency | 60 Hz |
| Voltage | 220-230 ±6% (Single Phase) / 220/380-460 ±10% (Three Phase) |
| Capacitor | Built in |
| Over load protection | Provided by the user |
| Casing material | Aluminium |
| Dimensions of cable entry | PG 11 - PG 13.5 – M16x1.5 – M20x1.5 |
Performance Curves and Selection Chart
The document includes detailed performance curves for various CVM models (A and B series) at 60Hz. These curves illustrate the relationship between flow rate (Q), head (H), pump power input (P2), efficiency (η), and Net Positive Suction Head (NPSH). A selection chart is also provided to help identify the appropriate pump model based on required capacity and head.
Performance Range Chart: Displays head (H) in meters and feet against flow rate (Q) in liters per minute and cubic meters per hour for different pump models.
Selection Chart: Lists pump types, power ratings (kW and HP), and corresponding head values for various flow rates.
Constructions
Detailed construction information is provided, including sectional view drawings and a comprehensive sectional view table listing all parts, their materials, dimensions, and quantities.
Sectional View Drawing: A cross-section of the CVM pump illustrating its internal components with numbered references.
Sectional View Table: A detailed list of pump components, their part names, materials (e.g., Cast iron, PPE+PS Glass fibre reinforced, NBR, AISI 304, AISI 416), dimensions, standards, and quantities.
Mechanical Seals
Two configurations for mechanical seals are detailed:
- Up to 0.6 kW: Rotary seal ring (carbon graphite), Stationary seal ring (ceramic), Gasket (NBR), Bellows (NBR), Self driving spring (AISI 304), Frame (AISI 304), Retainer ring (AISI 304).
- 0.75 kW and Above: Rotary seal ring (ceramic), Stationary seal ring (carbon graphite), O Rings (NBR), Self driving spring (AISI 316), Frame (AISI 304).
Dimensions and Weight
The document provides dimensions and weight for the CVM pumps. This includes overall dimensions (B, H, ØI, MW) and weight in kilograms-force (kgf) for both single-phase and three-phase models.
Pump Dimensions Diagram: Illustrates the main dimensions of the pump with labeled measurements.
Packing Dimensions: Details the packing dimensions (X, Y, Z) and weight for various pump models.
Technical Data
Detailed technical data is presented, focusing on motor performance and noise levels.
Motor Data
This section includes tables for both single-phase and three-phase motors, detailing:
- Pump type, Power (kW/HP), Efficiency (IE rating), Capacitor (μF), Voltage (V).
- Efficiency at different load percentages (50%, 75%, 100%).
- Input power factor (cos-φ).
- Full load current (A) and Locked rotor current (A) for various voltage options (110V, 220V, 380V, 460V).
Noise Data
Noise levels (LpA - dB(A)) are provided for different pump models, measured at a 1-meter distance with a tolerance of ±2.5 dB.
