Low NPSH versions (oversized impeller in 1st stage) for boiler feed pumps can better handle poor inlet pressure and hot water. Some installations result in same temperatures in the feed pumps as in the boiler. With air-cooled top the shaft seals are protected.

Direct boiler feed with speed-controlled pumps replaces the modulating valves and leads to lower energy consumption, less stress on components and better steam quality. Stable operation with pump curve compensation for low flows with Grundfos frequency converters. Using a level sensor in the boiler for optimum level leads to better steam quality, efficiency and reliability. MAGdrive or double shaft seal to prevent from air entering the pump in duty/stand-by configurations.

1. Vertical multistage pumps - CR/CRE
Vertical, multistage centrifugal pump with suction and discharge ports on the same level.

2. Endsuction close coupled multistage pumps - CM/CME
CM, CME are reliable, quiet and compact horizontal end-suction pumps. The modular pump design makes it easy to make customised solutions.

3. Endsuction close coupled single-stage pumps - NBG/NBGE
Close-coupled pumps according to ISO 2858. Flanges are PN 16 with dimensions according to AS2129 table E. The pump has an axial suction port, radial discharge port, horizontal shaft and a back pull-out design enabling removal of the motor, motor stool, cover and impeller without disturbing the pump housing or pipework.

4. Endsuction close coupled single-stage pumps - NB/NBE
End-suction close-coupled pumps according to EN 733. The pump has an axial suction port, radial discharge port, horizontal shaft and a back pull-out design enabling removal of the motor, motor stool, cover and impeller without disturbing the pump housing or pipework.

5. Inline single-stage pumps - TP/TPE, TPD/TPED
Grundfos TP/TPE pumps are single-stage, close-coupled in-line centrifugal pumps with mechanical shaft seal and primely for applications such as heating/cooling/district energy. TPD/TPDE pumps are the twin-head version.

6. Digital Dosing Pumps - SMART Digital S/XL
SMART Digital diaphragm dosing pump with powerful variable-speed stepper motor (S) or powerful PMS (Permanent Magnet Synchronous) motor (XL) and FlowControl system to automatically detect malfunctions. High-end solution for complex and demanding applications with turn-down ratio up to 1:3000.

7. Booster Systems - Hydro MPC, Hydro Multi-E
Advanced and energy efficient pressure boosting system for boosting of clean water. Available with 2 - 6 (2 - 4 for Multi-E) parallel connected pumps, integrated advanced controller and all necessary fittings.