Circulation pump Mayer GPD 20-5

The Mayer GPD 20-5 circulation pump is a reliable and energy-efficient solution designed to ensure stable water circulation in heating and domestic hot-water systems. With its DN20 connection size, compact design, and quiet operation, the pump is ideal for apartments, small houses, local heating circuits, and household recirculation systems.

The pump uses a “wet” rotor design — a technology in which the motor is cooled and lubricated by the pumped liquid. This reduces noise, prevents overheating, eliminates the need for periodic maintenance, and significantly extends the equipment’s lifespan.

Optimal performance for domestic systems

The pump is intended for small and medium heating circuits, ensuring even heat distribution and stable operation of radiators and underfloor heating.

Reliable and durable construction

▪️ Cast-iron housing resistant to corrosion and high temperatures.
▪️ Technopolymer impeller — strong and hydraulically stable.
▪️ Ceramic bearings that reduce vibration and ensure quiet operation.
▪️ AISI 304 stainless-steel rotor sleeve — resistant to wear and chemical exposure.

Energy efficiency and system adaptability

▪️ Three-speed control for precise performance adjustment.
▪️ Lower energy consumption compared to older pump models.

Easy installation and operation

▪️ Can be installed on the supply or return line.
▪️ Comes with connection nuts included.
▪️ Simple construction requiring no complex maintenance.

Where Mayer GPD 20-5 is used

Suitable for:
✔ domestic heating systems (radiators, underfloor heating)
✔ DHW systems with recirculation
✔ short heating circuits
✔ indirect heating boilers
✔ small hybrid cooling systems

User benefits

▪️ Ultra-quiet operation — ideal for residential environments.
▪️ Reliable protection against overheating and rotor blockage.
▪️ Wide operating temperature range: +2 to +110°C.
▪️ Long service life thanks to quality materials and wet-rotor technology.
▪️ Reduced system energy consumption thanks to stable circulation.