A refrigeration apparatus comprising: a refrigerant circuit including a compressor configured to compress refrigerant, a condenser configured to condense the refrigerant compressed by the compressor , a refrigerant tank configured to store the refrigerant condensed by the condenser , and a valve device configured to control passing of the refrigerant flowing out of the refrigerant tank ; a refrigerant leakage detecting unit configured to detect the refrigerant leaking from the refrigerant circuit ; and a controller configured to obtain a detection result from the refrigerant leakage detecting unit and, when determining that the refrigerant is leaking, to bring the valve device into a closed state to retain, in the refrigerant tank , the refrigerant being compressed by the compressor and condensed by the condenser , wherein the controller is configured to control the compressor to stop operating when a suction pressure on a suction side of the compressor becomes equal to or smaller than a low pressure threshold pressure value, and when determining that the refrigerant is not leaking, set the low pressure threshold pressure value to a first low pressure threshold pressure value, and characterized by , when determining that the refrigerant is leaking, set the low pressure threshold pressure value to a second low pressure threshold pressure value that is smaller than a first low pressure threshold pressure value. a refrigerant circuit including a compressor configured to compress refrigerant, a condenser configured to condense the refrigerant compressed by the compressor , a refrigerant tank configured to store the refrigerant condensed by the condenser , and a valve device configured to control passing of the refrigerant flowing out of the refrigerant tank ; a refrigerant leakage detecting unit configured to detect the refrigerant leaking from the refrigerant circuit ; and a controller configured to obtain a detection result from the refrigerant leakage detecting unit and, when determining that the refrigerant is leaking, to bring the valve device into a closed state to retain, in the refrigerant tank , the refrigerant being compressed by the compressor and condensed by the condenser , wherein the controller is configured to control the compressor to stop operating when a suction pressure on a suction side of the compressor becomes equal to or smaller than a low pressure threshold pressure value, and when determining that the refrigerant is not leaking, set the low pressure threshold pressure value to a first low pressure threshold pressure value, and characterized by , when determining that the refrigerant is leaking, set the low pressure threshold pressure value to a second low pressure threshold pressure value that is smaller than a first low pressure threshold pressure value. control the compressor to stop operating when a suction pressure on a suction side of the compressor becomes equal to or smaller than a low pressure threshold pressure value, and when determining that the refrigerant is not leaking, set the low pressure threshold pressure value to a first low pressure threshold pressure value, and characterized by , when determining that the refrigerant is leaking, set the low pressure threshold pressure value to a second low pressure threshold pressure value that is smaller than a first low pressure threshold pressure value. <EOS>