Hydro Multi B Pressure Booster Pump System
The Hydro Multi-B pressure boosting system is a unique combination of compact efficient variable speed multistage pumps and simple user interface.
Due to the simplicity of the CU 323 controller unit, all daily operations can be handled in a safe and simple manner, which makes the system ideal for water supply in most applications that fit within the performance range of the Multi-B pump system.
- Features
- Applications
- Tech Specs
- Dimensions
- Brochure
- Compact and designed to last
The high quality components and the design of the Hydro Multi-B booster system have been chosen with a focus on sturdiness and compactness. As a result, the user gets the benefits of a complete solution, with components optimized for domestic water pressure boosting.
- Reliability
The CM pump has high reliability built-in. Clamping of the pumps impeller has been greatly improved by implementing a new stop ring to form a well-defined base.Combining this feature with a Nordlock© washer at the other end of the pump stack creates a robust and reliable design.
- Ready… Set… Pump!
Before leaving the factory, every unit is completely assembled and thoroughly tested and inspected. This means that when customers receive their Multi-B booster system, it is only a matter of plugging it in and starting it up.
- Large complexes such as schools and office buildings
- Multi-storey buildings
- When redundant pumping is needed
| No. of pumps | Pump type | Motor (hp) |
Voltage (V) |
FLA (Amps) U1 / U2 / U3 |
| 2 | CME 3-3 | 1.5 | U1 | 13.1 |
| CME 3-5 | 1.5 | U1 | 13.1 | |
| 3 | CME 3-3 | 1.5 | U1 | 19.7 |
| CME 3-5 | 1.5 | U1 | 19.7 | |
| No. of pumps | Pump type | Motor (hp) |
Voltage (V) |
FLA (Amps) U1 / U2 / U3 |
| 2 | CME 5-3 | 1.5 | U1 | 13.1 |
| CME 5-4 | 2 | U1,U2,U3 | 17.8 / 11.2 / 5.8 | |
| CME 5-5 | 2 | U3 | 17.8 / 11.2 / 5.8 | |
| CME 5-3 | 1.5 | U1 | 19.7 | |
| CME 5-4 | 2 | U1,U2,U3 | 26.7 / 16.8 / 8.7 | |
| CME 5-5 | 2 | U3 | 26.7 / 16.8 / 8.7 | |
| No. of pumps | Pump type | Motor (hp) |
Voltage (V) |
FLA (Amps) U1 / U2 / U3 |
| 2 | CME 10-1 | 1.5 | U1 | 13.1 |
| CME 10-2 | 3 | U2,U3 | 16.6 / 8.5 | |
| CME 10-3 | 5 | U2,U3 | 26.8 / 12.2 | |
| 3 | CME 10-1 | 1.5 | U1 | 19.7 |
| CME 10-2 | 3 | U2,U3 | 24.9 / 12.75 | |
| CME 10-3 | 5 | U2,U3 | 40.2 / 18.3 | |
| No. of pumps | Pump type | Motor (hp) |
Voltage (V) |
FLA (Amps) U1 / U2 / U3 |
| 2 | CME 15-1 | 3 | U2,U3 | 16.6 / 8.5 |
| CME 15-2 | 5 | U2,U3 | 26.8 / 12.2 | |
| CME 15-3 | 7.5 | U2,U3 | 39.4 / 17.8 | |
| 3 | CME 15-1 | 3 | U2,U3 | 24.9 / 12.75 |
| CME 15-2 | 5 | U2,U3 | 40.2 / 18.3 | |
| CME 15-3 | 7.5 | U2,U3 | 59.1 / 26.7 |
View Full Size Grundfos Multi-B Dimensional Image
| Connection size (in) |
L mm (in) |
W mm (in) |
W1 mm (in) |
W2 mm (in) |
H1 mm (in) |
H2 mm (in) |
Tank L (gal) |
Weight kg (lb) |
| 2″ NPT | 701 (27.6) | 660 (26) | 274 (10.8) | 180 (7.1) | 447 (17.6) | 561 (22.1) | 16.6 (4.4) | 97 (214) |
| 701 (27.6) | 663 (26.1) | 274 (10.8) | 178 (7) | 447 (17.6) | 561 (22.1) | 16.6 (4.4) | 98 (216) | |
| 2″ NPT | 1010 (43.3) | 612 (24.1) | 274 (10.8) | 142 (5.6) | 447 (17.6) | 561 (22.1) | 16.6 (4.4) | 140 (309) |
| 1010 (43.3) | 632 (24.9) | 274 (10.8) | 178 (7) | 447 (17.6) | 561 (22.1) | 16.6 (4.4) | 142 (313) | |
| Connection size (in) |
L mm (in) |
W mm (in) |
W1 mm (in) |
W2 mm (in) |
H1 mm (in) |
H2 mm (in) |
Tank L (gal) |
Weight kg (lb) |
| 2″ NPT | 701 (27.6) | 643 (25.3) | 274 (10.8) | 147 (5.8) | 462 (18.2) | 574 (22.6) | 16.6 (4.4) | 103 (227) |
| 701 (27.6) | 663 (26.1) | 323 (12.7) | 152 (6) | 485 (19.1) | 599 (23.6) | 16.6 (4.4) | 127 (280) | |
| 701 (27.6) | 676 (26.6) | 323 (12.7) | 170 (6.7) | 485 (19.1) | 599 (23.6) | 16.6 (4.4) | 136 (300) | |
| 2″ NPT | 1010 (43.3) | 582 (22.9) | 274 (10.8) | 147 (5.8) | 462 (18.2) | 574 (22.6) | 16.6 (4.4) | 148 (326) |
| 1010 (43.3) | 617 (24.3) | 323 (12.7) | 152 (6) | 485 (19.1) | 599 (23.6) | 16.6 (4.4) | 158 (408) | |
| 1010 (43.3) | 671 (26.4) | 323 (12.7) | 170 (6.7) | 485 (19.1) | 599 (23.6) | 16.6 (4.4) | 201 (443) | |
| Connection size (in) |
L mm (in) |
W mm (in) |
W1 mm (in) |
W2 mm (in) |
H1 mm (in) |
H2 mm (in) |
Tank L (gal) |
Weight kg (lb) |
| 2.5″ NPT | 701 (27.6) | 658 (25.9) | 295 (11.6) | 114 (4.5) | 544 (21.4) | 673 (26.5) | 39 (10.3) | 150 (331) |
| 701 (27.6) | 658 (25.9) | 286 (15.2) | 145 (5.7) | 551 (21.7) | 681 (26.8) | 39 (10.3) | 155 (342) | |
| 701 (27.6) | 696 (27.4) | 455 (17.9) | 175 (6.9) | 564 (22.2) | 693 (27.3) | 39 (10.3) | 197 (434) | |
| 2.5″ NPT | 1010 (43.3) | 658 (25.9) | 295 (11.6) | 114 (4.5) | 544 (21.4) | 673 (26.5) | 39 (10.3) | 221 (487) |
| 1010 (43.3) | 658 (25.9) | 386 (15.2) | 145 (5.7) | 551 (21.7) | 681 (26.8) | 39 (10.3) | 226 (498) | |
| 1010 (43.3) | 696 (27.4) | 455 (17.9) | 175 (6.9) | 564 (22.2) | 693 (27.3) | 39 (10.3) | 290 (639) | |
| Connection size (in) |
L mm (in) |
W mm (in) |
W1 mm (in) |
W2 mm (in) |
H1 mm (in) |
H2 mm (in) |
Tank L (gal) |
Weight kg (lb) |
| 3″ ANSI | 701 (27.6) | 742 (29.2) | 386 (15.2) | 152 (6) | 582 (22.9) | 759 (29.9) | 39 (10.3) | 214 (472) |
| 701 (27.6) | 742 (29.2) | 455 (17.9) | 152 (6) | 592 (23.3) | 772 (30.4) | 39 (10.3) | 219 (483) | |
| 701 (27.6) | 742 (29.2) | 455 (17.9) | 183 (7.2) | 592 (23.3) | 772 (30.4) | 39 (10.3) | 228 (503) | |
| 4″ ANSI | 1010 (43.3) | 752 (29.6) | 386 (15.2) | 152 (6) | 594 (23.4) | 772 (30.4) | 39 (10.3) | 290 (639) |
| 1010 (43.3) | 752 (29.6) | 455 (17.9) | 152 (6) | 607 (23.9) | 785 (30.9) | 39 (10.3) | 295 (650) | |
| 1010 (43.3) | 752 (29.6) | 455 (17.9) | 183 (7.2) | 607 (23.9) | 785 (30.9) | 39 (10.3) | 309 (681) |
