What is the primary function of the three-stage cycle in a piston pump?

The primary function of the three-stage cycle in a piston pump is to produce a vacuum in the cylinder. In a piston pump, the three stages generally involve the intake, compression, and discharge phases, which work together to effectively draw in water and create the necessary vacuum. This vacuum is crucial because it allows the pump to pull water from the source, filling the pump chamber before the process of compression is initiated.

In this cycle, as the piston moves downward, it creates lower pressure within the cylinder, which then draws water in. After reaching the optimal filling level, the piston moves upward, compressing the water, which eventually leads to its discharge. The creation of this vacuum is essential for the initial water intake and is a fundamental aspect of how fluid dynamics work within piston pumps.

While managing discharge pressure is certainly a component of pump operation, it is primarily a function related to the efficiency and effectiveness of water movement rather than the core purpose of the three-stage cycle itself.