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I. Centrifugal Pumps: The Power Source of Air Conditioning Systems A central air conditioning system mainly consists of two circulating systems: the chilled water system and the cooling water system. In both systems, pumps are indispensable core equipment.   Chilled Water System It is responsible for transporting cooling capacity from the chiller to various terminal equipment in the building, such as fan coil units and air handling units. The chilled water pump drives the circulation of chilled water in a closed pipeline, ensuring that the cooling capacity is accurately and efficiently delivered to the required locations.   Cooling Water System It is tasked with carrying the heat generated by the chiller to the cooling tower and dissipating it into the atmosphere through evaporat...

Split case pumps—also called double-suction split case pumps—are one of the most important pump types used in municipal water supply, industrial systems, HVAC cooling water, fire systems, and irrigation projects. Their signature feature is the “split casing” design that makes them extremely stable, durable, and easy to maintain. In this article, we explain what a split case pump is, how it works, and where it is used. What Is a Split Case Pump? (Definition) A split case pump is a type of centrifugal pump where the pump casing is split horizontally into two halves (upper half & lower half). This allows easy access to: impeller shaft bearings wear rings without removing the pipework. Most split case pumps are also double-suction pumps, meaning water enters...

What Is an End Suction Pump? (Definition) An end suction pump is a type of centrifugal pump where: Water enters through the end (axially) of the pump Water exits from the top (radially) A single impeller creates centrifugal force to move the liquid It is called “end suction” because the suction nozzle is positioned at the “end” of the pump housing. End suction pumps are available in two major standards: EN733 (DIN 24255) — common in Europe, Middle East, Asia ISO2858 — widely used for industrial and chemical processes How Does an End Suction Pump Work? 1. Liquid enters through the suction port The pump must be filled with liquid or primed before operation. 2. The impeller rotates Centrifugal force pushes liquid outward. 3. Pressure builds i...