The
priming
pot also known as priming chamber is used for priming
the pump in the event of negative suction condition. This avoids the
need of foot valve and frequent priming of the pump.
The priming
pot is connected to the pump suction filled with liquid
and sealed airtight before initial start up. After starting the pump,
the liquid from priming
pot is drawn into the pump and the partial vacuum is
created in the pot. Due to partial vacuum, liquid rises in the suction
pipe and pushes the air into the pot. This action fills the suction
pipe resulting in priming. The air accumulated in the priming
pot mixes with liquid and is driven through discharge
of the pump. Thus, the priming
pot is filled and is ready again for the next start
up.