Does a reciprocating piston pump have the function of sucking (drawing in) water while it is operating?
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I understand the working principle of reciprocating piston pumps. Now I have a question: if a pipeline is filled with water and there is an adequate supply of it, but the pressure is low, does the piston pump have the ability to draw in water – in other words, to suck the water from within the pipeline into the pump? Is external pressure still necessary for water to enter the pump?
This definitely exists; piston pumps have the capability to evacuate air.
Yes, reciprocating pumps have a very strong self-priming ability.
It’s possible; attention may also need to be paid to the negative pressure that occurs when it gets emptied
It’s possible. During its working cycle, a plunger pump simultaneously performs suction and discharge; the suction action is similar to that of a syringe
Plunger pumps generally require a certain pressure at the inlet