The Spirotech SpiroExpand MultiControl Compact EMCK Solo (EMCK-S300-4.0) is a genuine Spirotech automatic expansion and pressure maintenance unit. Designed for closed heating and cooling systems, this compact unit ensures precise pressure control and optimal performance. It is suitable for systems with a maximum volume of 300 liters and operates at a maximum pressure of 4.0 bar. Key technical specifications include a G 3/4" connection, 230V/50Hz power supply, and an empty weight of 16 kg. It features a height of 600 mm, width of 320 mm, and depth of 220 mm, supporting a maximum operating temperature of 70 °C and a maximum system temperature of 90 °C.