ALPHA1 circulator pump - heating, cooling, hot water GRUNDFOS ALPHA1 is a complete range of circulator pumps. The pumps are energy-optimised and comply with the requirements of the EuP directive EuP 2015. ALPHA1 L circulator pump - heating, cooling, hot water The ALPHA1 is the only upgrade and replacement pump that fits 95 % of boilers equipped with Grundfos pumps. ALPHA2 circulator pump - heating, cooling, hot water ALPHA2 is the best pump to withstand the tough conditions in a heating system, and with four newly added features, it just got even tougher ALPHA2 L OEM circulator pump - heating, cooling, hot water The ALPHA2 L variant features integrated differential-pressure control, enabling adjustment of pump performance to the actual system requirements. The installation of a GRUNDFOS ALPHA2 L pump will reduce the power consumption considerably, reduce noise from thermostatic valves and similar fittings, and improve the control of the system. ALPHA3 circulator pump - heating, cooling, hot water The ALPHA3 is our newest circulator for domestic buildings. It is of the renowned Grundfos quality and guarantees easy installation, world-class energy efficiency and reliable operation in the toughest conditions. APG submersible pump - pumping of sewage and wastewater For the pumping of sewage and wastewater containing destructible solids.