The KDNE 4 - 2 POLI standardized centrifugal pump on skid accommodates operation on circulation of hot water for heating, cold fluid for air conditioning, and cooling. It is integrated with an elastic coupling and enhanced electronic fittings. The system utilizes DAB MCE/C inverter, which performs flexible pumping routines and stabilizes constant differential pressure conditions. Its construction is made in accordance to a helical single-staged layout patterned from DIN-EN 733 standards. This pump assembly is the product of the incorporation of a cast iron-designed seal enclosure and motor engine, and flange fixtures that are employed in agreement to DIN 2533. Its impeller gear in cast iron composition is comprehensively capped and balanced an axial thrust infusion through the corresponding holes.