4 pole motor- Single head circulator - Pumps are of the canned rotor type, meaning that the pump and motor form an integral unit without shaft seal and with only two gaskets for sealing. The bearings are lubricated by the pumped liquid. - Stainless steel bearing plate - Proportional pressure control - Constant pressure control - Constant curve/constant speed - Internal motor protection - Wide temperature range where the liquid temperature and the ambient temperature are independent of each other - LED control indicator