Electric pipe freezing unit with closed refrigerant circuit suitable for steel, copper and plastic. Cooling aggregate in either 240v or 110v format (50Hz 430w). 2 no. refrigerant hoses, heads and tightening straps suitable for ¼ " - 1 ¼ ", 15mm - 42mm pipework. Supplied in sturdy sheet metal housing. Fast easy freezing of pipes that have not been drained, e.g. ¾ " steel pipe can be frozen in only 9 minutes.