Grundfos ALPHA1 circulator pump is a complete range of circulator pumps with integrated differential-pressure control enabling adjustment of pump performance to the actual system requirement.
The pumps are energy-optimised and comply with the requirements of the EuP directive EuP 2015.
High-efficient motors EuP 2015 ready.
Suitable for installation in existing systems.
Built-in electrical and thermal protection of the pump.
Simple setting and operation in a very compact design.
Plug and play with patented cable plug for safe and easy connection.
The pumps are of the close-coupled type.
The difference between the CM and the CME pump ranges is the motor. CM pumps are fitted with mains-operated motors, whereas the motors for CME pumps have an integrated frequency converter.
Both CM and CME pumps have mechanical shaft seals.
The CM and CME pumps are available in cast iron or stainless steel (AISI 304/DIN 1.4301 stainless steel, which is for water and non-corrosive liquids, and AISI 316/DIN 1.4401 stainless steel, which offers a high degree of corrosion protection against aggressive liquids).
Grundfos DP drainage pump is designed for pumping drain water and groundwater from installations in or around private housing, farms and small industrial plants. These pumps are also ideal for flood-relief applications and as utility pumps in farming, industry, etc.
DP pumps are fitted with a suction strainer, on which the pump stands. The suction strainer allows for the passage of solid particles of up to 10 mm in size, which is the maximum free passage size through DP pumps. The strainer is easy to dismantle for cleaning or for inspection of the pump hydraulics.
The impeller for the DP range is of a semi-open multivane design. The impeller clearance can easily be adjusted simply by tightening or loosening the adjustment screws at the bottom of the suction cover.