Usage : for Refrigerate Cooling Method : Indirect Cooling Copper made accumulator, copper accumulator, copper made muffler for refrigerators, freezers. Specification: Material: 100% copper tube. Diameter: Acc. To customers drawing. Wall thickness: 0.5-1.2mm. Application: Be extensively used in low temperature refrigeration, heat-pump, and some residential air-conditioning applications. They hold unused system charge to prevent liquid slugging of the compressor and excessive refrigerant dilution of the compressor oil; Copper accumulator inner cleanness meets R22, R134A, R407C and R600 cooling system. If any special requirements, pls contact us freely.