In the context of pump operation, which term describes the process of filling the pump with liquid and removing all air?

In the context of pump operation, which term describes the process of filling the pump with liquid and removing all air?

• A. Priming
• B. Bleeding
• C. Degassing
• D. Purging

Answer: (A)

Priming is the process of filling the pump and its suction line with liquid and expelling trapped air so the pump can develop a continuous liquid column on the suction side. This is essential because a pump relying on suction cannot create flow effectively if air remains; air compresses and cavitation can occur, preventing the pump from drawing in fluid. Bleeding refers to venting air from a system after components are filled, not the initial fill of the pump itself. Degassing means removing dissolved gases from the liquid, not air pockets inside the pump. Purging involves flushing out air or contaminants from a line, typically to clean or replace the fluid, rather than establishing the prime of the pump. So, the term that specifically describes filling the pump with liquid and removing all air is priming.

Priming is the process of filling the pump and its suction line with liquid and expelling trapped air so the pump can develop a continuous liquid column on the suction side. This is essential because a pump relying on suction cannot create flow effectively if air remains; air compresses and cavitation can occur, preventing the pump from drawing in fluid.

Bleeding refers to venting air from a system after components are filled, not the initial fill of the pump itself. Degassing means removing dissolved gases from the liquid, not air pockets inside the pump. Purging involves flushing out air or contaminants from a line, typically to clean or replace the fluid, rather than establishing the prime of the pump.

So, the term that specifically describes filling the pump with liquid and removing all air is priming.