... screw compressors Cooling capacity 151.2kw--752.4kw Air Source Heat pump with Screw CompressorsModel :LSQW(R)F 150Z÷ ... expansion valve, high & low pressure switch. The heat pump unit is completed also with 4-way valve, liquid ... pump, easy to install and maintain. Applicable to hotels, villas, hospitals, cinemas, stadiums, recreations, office blocks, factories and so on. Air Source Heat pump 185-1730kw ...