Based on this product's specifications, here are some alternatives and similar models
Circulator Pump Grundfos ALPHA 1L 25-40 180
Summary description:
The Grundfos ALPHA 1L 25-40 180 circulator pump is designed for heating systems. It features a compact design, high efficiency, and easy installation. With a maximum flow rate of 2.5 m³/h and a head of 4 meters, it ensures optimal circulation. The pump is equipped with a built-in motor protection and is suitable for both residential and commercial applications.