Category Archives: Grundfos Pumps

GRUNDFOS CMB SERIES Multi-Stage household pumps

GRUNDFOS CMB Series booster Pumps.


The CMB Booster is a horizontal multistage centrifugal pump designed for domestic and light industrial applications. It is suitable for pressure boosting from above ground rainwater tanks and from mains water.


Has full stainless wet end

Dry run protection

Adjustable cut in pressure (PM2)

2 Year pump and motor warranty

CMB 1-4, CMB 3-3, CMB 3-4, CMB 3-5, CMB 5-3, CMB 5-4, CMB 5-5



The Grundfos Pump Genie is an interconnect device that enable the connection of 2 different water supplies to the one pump unit. The Pump Genie will always give preference to the rain-water tank and will automatically change to town water when rain tank supplies become low.

One advantage of the water Genie over other types of switches which are available is that it never allows the two supplies of water to combine. It can be fiited to a new CH2or CH4 series Press control pump at the time of installation or at some later date.