Circulation pump Mayer GPD 25-5

The Mayer GPD 25-5 circulation pump is a reliable unit designed to ensure uninterrupted movement of the heat-carrier in heating and domestic hot-water systems. The model is notable for its resistance to pressure fluctuations, quiet operation, and high energy efficiency, making it an excellent choice for both apartments and private homes.

The pump features a “wet” rotor design, where the pumped liquid cools and lubricates the motor. This reduces noise, minimizes vibration, and significantly extends the device’s service life. Its compact construction allows easy installation even in tight spaces.

Quiet and smooth operation

Ceramic bearings and the enclosed motor design ensure virtually silent circulation — ideal for residential environments.

Energy efficiency and three operating modes

A three-speed selector allows users to adjust pump performance according to the system’s needs, helping reduce electricity consumption.

Reliable construction

▪️ Cast-iron housing resistant to corrosion and high temperatures.
▪️ Wear-resistant polymer impeller.
▪️ Stainless-steel (AISI 304) rotor sleeve.
▪️ EPDM sealing for excellent leak protection.

Versatile application

Suitable for:
▪️ radiator heating and underfloor heating;
▪️ DHW circuits;
▪️ heat-carrier recirculation;
▪️ small industrial systems.

User benefits

▪️ Easy installation — connection nuts included.
▪️ No need for a separate lubrication system.
▪️ Resistant to overheating and voltage fluctuations.
▪️ Long motor lifespan thanks to heat-carrier cooling.
▪️ Can be installed on both supply or return pipelines.