SCALA1 3-45 - 1HP On Demand Booster Pump w/ Bluetooth


35.00 LBS
$35.00 (Fixed Shipping Cost)
Adding to cart… The item has been added

Product Overview

The SCALA1 3-45 (115V) pump is currently out of stock until late June. For a LIMITED TIME ONLY, we have have reduced the price of the SCALA2 3-45 (115V) as an alternative. The primary difference between the two pumps is that the SCALA2 offers a variable speed drive which provides constant pressure, where the SCALA1 is a single speed pump. Both pumps turn on automatically when there's a drop in pressure in the pipe and will run until all valves are closed, allowing the pressure to build in the pipe, at which point, the pump will shut off. The SCALA2 also allows the user to set and adjust the pressure on the pump as needed.

Note: Fixed Shipping Rate does not apply to Hawaii or Alaska.

SCALA1 can connect via Bluetooth.

The MQ Successor, SCALA1 is a self-priming, multistage pump, that incorporates all the components of a pressure booster into a compact composite enclosure.

As it is self-priming, the SCALA1 and pump water from a level below the pump. Provided it is filled with water, the pump can lift water from a depth of 26 feet in less than 5 minutes. This facilitates easy installation and start-up of the pump and provides more reliable water supply in installations where there is a risk of dry running and leakages in suction hose or pipes. In city water or well water applications, use a PRLV-30, Pressure Reducing Limit Valve on the suction side of the pump to 30 PSI to prevent inbound water from exceeding the 43 PSI max inlet pressure.

SCALA1 can communicate with Grundfos GO app via built in Bluetooth, which enables detailed pump monitoring and high customization options, making this pump a good fit for every application.

SCALA1 Successor incorporates advanced protection features such as:

  • Dry running protection that will automatically stop the pump in case of water shortage
  • Cycling protection which will prevent pump starting frequently in case of minor leakages in installation
  • Max runtime protection can stop the pump after a desired period of continuous operation, preventing potential damage due flooding in case of pipe breakages.

The pump has a built-in motor protection that will stop the pump if exposed to excessive temperature due to high ambient temperature, in case of seizure or overload, thus preventing a motor burnout.

With Grundfos GO, you can easily setup SCALA1 as a Twin booster system, operating as duty/stand by as well as duty/assist. It is also possible to add external input control and schedule a pump operation via calendar function.

MQ Successor requires no maintenance, but it is recommended to keep the pump clean. Check the non-return valves, and keep the ventilation holes free of dust.

Suitable for:
  • Plumbing: Pressure Boosting
  • Residential groundwater intake
  • Residential water pressure boosting
  • Residential rainwater harvesting

The SCALA1 is a fully integrated, all-in-one, self-priming, compact waterworks designed for pressure boosting in domestic and light-commercial applications, such as garden irrigation or pressure boosting to one and two family houses and apartments.


*Note that the original Grundfos MQ 3-45 has been discontinued and is being replaced with the MQ Successor, aka SCALA1.

SCALA1 pump shown below is installed in a flooded suction application with a 3000 gallon polyethylene water storage tank, 2" Ball Valve with 1" Reducer Bushing, Inline Y-Strainer with 50 Mesh Filter(to protect the pump from debris), and 1" x 12" Stainless Steel Flex Hoses (for installation flexibility and quick disconnect capability).

1" x 24" Stainless Steel Flex Hose makes connections to existing plumbing easier.