Circulation pump Mayer GPD 20-6 SB

The Mayer GPD 20-6 SB circulation pump is a modern, high-efficiency device designed to maintain stable pressure and ensure forced water circulation in heating and water supply systems. The model is intended for residential and small commercial installations where reliable, quiet, and economical pump operation is essential.

The pump is equipped with a “wet” rotor and a protected asynchronous motor, ensuring smooth operation, low noise levels, and long service life. Thanks to the optimal combination of power and energy efficiency, GPD 20-6 SB is ideal for radiator heating systems, domestic hot-water circuits, indirect heating boilers, and small circulation networks.

High performance and stable pressure

The pump effectively maintains the movement of the heat-carrier through the pipes, ensuring even heating and stable operation of heating equipment.

“Wet” rotor technology

▪️ The pumped liquid provides motor cooling and lubrication.
▪️ Reduced noise and vibration levels.
▪️ Extended service life of bearings and internal components.

Reliable construction

▪️ Cast-iron housing resistant to corrosion and mechanical stress.
▪️ Wear-resistant polymer impeller.
▪️ Ceramic bearings for silent and long-lasting operation.
▪️ AISI 304 stainless-steel rotor sleeve for additional protection.

Efficiency and easy control

▪️ Flexible adjustment of operating modes.
▪️ Three-speed control to match system requirements.
▪️ Low energy consumption and high efficiency.

Application areas

Mayer GPD 20-6 SB is suitable for:
▪️ radiator and underfloor heating systems;
▪️ DHW systems and boilers;
▪️ circulation circuits in apartments and private homes;
▪️ small industrial installations;
▪️ systems with constant or variable water flow.

User benefits

▪️ Quiet operation — comfortable for residential environments.
▪️ Easy installation — standard connections and compact design.
▪️ Reliable protection against overloads and overheating.
▪️ Long service life thanks to premium materials.
▪️ Energy savings due to efficient design and three-speed control.