... can be combined with rotary devaporizer, vacuum freezing and drying box, water circulating multipurpose vacuum pump, magnetic treater and other instruments ... ,poor water quality, poor water pressure, high temperature. DLSB-40/20,30,40,80,120 modelRefrigerating abilityCirculating abilityControl-temp abilityWorking conditionsoverallCapacityMin tempRefrigerating capacityflowliftTemp ...