Heating/ Cooling Etanorm SYT Applications: Heat transfer systems (DIN 4754, VDI 3033) or hot water recirculation (DIN 4752). Know More ETANORM SYT Download Brochure Send download link to: HPK-L Applications: Pumping hot water and thermal oil in piping systems or tank systems, particularly in medium-sized and large hot-water heating systems, forced circulation boilers, district heating systems Know More HPK-L Download Brochure Send download link to: