Wet rotor circulation pump type ALPHA1 25-40 N 180 1x230 50Hz 6H ALPHA1 series 99199591

Grundfos ALPHA1 25-40 N 180 Circulation Pump – an effective solution for your installation

The Grundfos ALPHA1 circulation pump is an advanced device designed for water circulation in heating systems. It directly affects user comfort and reduces operating costs thanks to its high energy efficiency. The pump's construction, based on a permanent magnet motor, ensures quiet operation and reliability. It is an ideal choice for both installers looking for proven solutions and end-users wanting to optimize energy consumption.

Construction and application

The ALPHA1 pump is designed to work with various types of heating installations, including systems with variable flow rates. Its versatility makes it suitable for both single-family homes, multi-family buildings and industrial facilities. Made of high-quality materials, such as GG 15 (GJL-150) cast iron and stainless steel, it guarantees long-lasting and trouble-free operation. Connections with a diameter of 1 1/2 inch (40) with a BSPP external thread facilitate installation and integration with existing infrastructure. The installation length of 180 mm allows installation in a limited space.

Key features and benefits

• High energy efficiency (EEI 0.2): This means significant savings on electricity bills compared to older models of circulation pumps.
• Quiet operation (below 43 dB): Provides comfortable use without annoying noise.
• Stepless speed control: Allows precise adjustment of the pump's performance to the current needs of the heating system, which translates into optimized energy consumption.
• Built-in motor speed controller: Eliminates the need for additional control devices.
• Ceramic shaft: Provides high resistance to corrosion and scale build-up, which extends the pump's life.
• Automatic venting: Facilitates use and minimizes the risk of failure related to the presence of air in the installation.
• Impeller blockage protection: Automatically unblocks the impeller when an obstacle is detected, increasing the reliability of the device.
• Wide operating temperature range (2…110 °C): Allows the pump to be used in various temperature conditions.
• Maximum head 4 m and nominal flow 1.5 m³/h: Provide adequate performance in most typical heating installations.

The ALPHA1 pump is compatible with various voltage (230 V) and frequency (50/60 Hz) standards, which increases its versatility and allows use in different countries. The IPX4 protection class protects the device against splashing water, ensuring safe use. Insulation class F guarantees high resistance to temperatures and environmental conditions.