What Is The Difference Between A Cold Water Pump And A Hot Water Pump

Jan 24, 2025

The commonly used cold water pump refers to a pump that can transport liquids with temperatures below 80 ° C, which is called a cold water pump, and a pump with temperatures between 80 ° C and 120 ° C is called a hot water pump.

The difference between a cold water pump and a hot water pump:

1. Characteristics of Cold Water Pump
The commonly used seals for cold water pumps are packing seals or mechanical seals made of nitrile rubber material. The most common pump that uses packing seals is a single-stage single suction centrifugal pump. This pump is also one of the earlier cold water pump products. Due to the fact that the packing itself requires liquid cooling and lubrication, the maximum temperature resistance of this pump is only about 80 degrees. In addition, the cold water pump with packing seal also has the phenomenon of dripping water, which pollutes the pump base and the surrounding environment. This type of product has gradually been replaced by other centrifugal pump series products. The cold water series adopts mechanical seal, which will not have water leakage, and all use a direct connected structure impeller on the motor shaft, which is significantly better than the old series cold water pump in terms of noise and vibration. This type of pump product is commonly used for air conditioning water circulation, so it is also known as air conditioning chilled water circulation pump.

2. Characteristics of hot water pump
Hot water pump is a type of hot water pump product optimized and designed based on the centrifugal pump series. The hot water circulation pump has a large usage because the pump adopts a vertical installation motor at the upper part, and there is a short bracket between the pump and the motor, which will not cause water to enter the motor and burn it out due to mechanical seal leakage. Moreover, it can be designed as a mechanical seal on the basis of the hot water pump. The hot water high-temperature pump product, which relies on an external tap water cooling device, can reach a maximum temperature of 240 ° C.