Grundfos ALPHA1.1 are stand-alone circulators with basic control functions.
Grundfos ALPHA2.1 are stand-alone circulators with advanced control functions.
Grundfos ALPHA2.2 are stand-alone circulators with advanced control functions plus Go Balance
UPM3 is a boiler integrated circulator externally controlled via a signal cable entry.
UPML is designed for integration in boilers and other heating appliances with large performance.
UPMM is designed for integration in boilers and other heating appliances with medium performance.
UPMXL is designed for integration in boilers and other heating appliances with extra large performance.
