Grundfos Circulator Pumps

Grundfos circulator pumps are designed for best-in-class efficiency with low maintenance. Compared to conventional circulators, these rotor pumps can cut your energy costs by up to 80 % while delivering noise-free performance. The stainless steel and bronze pumps are good for moving potable water in open-loop circulation due to their excellent rust and corrosion resistance.

Meanwhile, the cast iron pumps are the standard choice for close-looped circulation due to the material’s low cost and good performance in handling de-oxygenated water.

Features & Benefits

Know more about the features & benefits of using Grundfos' Circulator.

3 speed variations: single-speed, three-speed, variable speed
Can be equipped with Isolation valve option for easier servicing
Circulator pump timer to operate unit at pre-set times
Some models have check valves for preventing water backflow
Can be installed horizontally or vertically
Excellent reliability and efficiency

Available Options

We customise pumps according to your specific application. Get in touch with us to know your options.

Materials options
Aqua stat kit
Connection options
Accessories and spare parts
Baseplate/mounting

Key Specifications

Here are the key specifications of Grundfos' Circulator.

Max flow: 4 m³/h to 81 4 m³/h
Max head: 8 m to 18 m
Max pressure: 10 bar to 16 bar
Liquid temperature: -10 .. 120 °C

Applications

Here is a list of industrial applications for which Grundfos' Circulator are commonly utilized.

Commercial heating
Domestic heating
Industrial heating
Commercial air conditioning
Domestic and commercial hot water re-circulation
District cooling
District heating

ALPHA

ALPHA 1L

ALPHA 2

MAGNA

MAGNA 1

MAGNA 1D

MAGNA 3D

UPS

UPS Series 200

Principle of Operation

Like other centrifugal pumps, Grundfos circulator pumps utilise an impeller to generate pressure, which forces fluid through the system. The impeller is driven by a motor located at the center of the pump. This motor is powered by electricity and rotates the impeller. The blades of the impeller create a low-pressure zone at the center of the pump, which draws water in from the inlet. As the water passes through the impeller blades, pressure increases and the high-pressure water is then discharged through the outlet for heating needs.