Circulation pump Mayer GPD 25-6 SB

The Mayer GPD 25-6 SB circulation pump is a high-performance model designed for pumping water in heating, cooling, and domestic hot-water systems. It provides stable pressure and even heat-carrier circulation, even in large residential installations.

Thanks to the combination of a powerful asynchronous motor, a “wet” rotor, and an optimized hydraulic layout, the pump operates quietly, efficiently, and with minimal energy consumption. GPD 25-6 SB is built for long-term operation and is suitable for private homes, cottages, townhouses, and small commercial facilities.

Enhanced performance

With its enlarged 25 mm connection diameter, the pump is suitable for systems with higher heat-carrier flow and larger pipelines.

Advanced hydraulics

▪️ Cast-iron housing resistant to pressure and temperature fluctuations.
▪️ Wear-resistant impeller ensuring stable hydraulic performance.
▪️ Ceramic bearings that reduce noise and extend service life.

Efficiency and easy operation

▪️ Three-speed selector adapts pump performance to system requirements.
▪️ Motor cooling via the heat-carrier reduces wear and extends durability.
▪️ Simple construction makes installation and maintenance easy.

Where Mayer GPD 25-6 SB is used

▪️ Centralized and individual heating systems.
▪️ Radiator and underfloor heating.
▪️ Domestic hot-water boiler circulation.
▪️ Air-conditioning and cooling systems.
▪️ Industrial and residential circuits with variable water flow.

Operational benefits

▪️ Ultra-quiet operation — ideal for residential environments.
▪️ Can be installed on both supply and return lines.
▪️ Reliable protection against overheating and rotor blockage.
▪️ Easy connection — standard terminal box and compact size.
▪️ Long service life and excellent corrosion resistance.