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Where the water level in the cold storage tank is below the level of the shower outlet a ‘negative head’ situation exists. Specialist Automatic Negative Head pumps to overcome this problem are available from Grundfos in the following models:
| Low Voltage | ||
| Range | Bar | Code |
| Twin Impeller | 2.0 | STL-2.0 CN |
| Heavy Duty Brass Pump | ||
| Range | Bar | Code |
| Twin Impeller | 1.5 | STN-1.5 B |
| Single Impeller | 2.0 | SSN-2.0 B |
| Twin Impeller | 2.0 | STN-2.0 B |
| Single Impeller | 3.0 | SSN-3.0 B |
| Twin Impeller | 3.0 | STN-3.0 B |
| Twin Impeller | 4.0 | STN-4.0 B |
Manual Negative Head Kits
Manually operated Negative Head Kits are also available from Grundfos for all pump ranges excluding Premier Heavy Duty Brass. To size your pump correctly to meet with your requirements, please refer to the shower pump selector in the brochures tab or call our technical helpline on 0845 2000 912.
Order Literature
