The 518633 Motor 3-Way Valve Actuator (EMV 110-M 89i0, IP40, RED)

compatible with:
Nibe & other manufactures, 
F1126
F1145
F1155 (6kW & 16kW) 
F1226 
F1245
F1255 (6kW & 16kW)
F730, F750 
VVM series (310, 320, 325, 500)

It appears to be a compact rotary actuator with a brass diverter valve, designed for closed heating systems such as geothermal and air-to-water heat pumps. The actuator features quick assembly via a clip system, Molex electrical connection, and built-in relay module for two-wire control.

( Compatible Parts: - 824082, 524279 & vst05 )