To provide a four way selector valve capable of improving ease and agility of switching operation of refrigerant flow passages, simplifying a configuration of the selector valve, improving the reliability of the selector valve, and reducing product cost.

This four way selector valve consists of an electromagnetic coil part provided with an electromagnetic coil, a case, a main valve arranged in a valve chamber in the case, and a valve seat forming the valve chamber. The valve seat is provided with a suction pressure leading hole communicating with a suction pressure side of a compressor, a discharge pressure leading hole communicating with a discharge pressure side of the compressor, and leading holes communicating with indoor and outdoor heat exchangers, respectively. The main valve is provided with a magnet, communicating parts communicating with the suction pressure leading hole and the leading holes, and an auxiliary valve moving pressure of the communicating parts and the valve chamber. The main valve turns on the valve seat through the magnet due to excitation of the electromagnetic coil.