What type of pump delivers water at a higher point than the pump itself when the valve is closed?

The force pump is specifically designed to move water under pressure, allowing it to deliver water vertically to a higher point even when the discharge valve is closed. This capability comes from the way these pumps create pressure within the system, pushing the water upward. When the valve is closed, the force generated by the pump means that water can still be forced into the delivery pipe and reach a height above the level of the pump itself.

In contrast, other types of pumps, like a lift pump, primarily move water from a lower elevation to a higher elevation but don't necessarily maintain a significant pressure when closed, meaning they may not be able to push water against a closed valve effectively. A suction pipe is usually involved in drawing water into a pump rather than delivering water at height, and the general category of pumps lacks the specificity to describe the unique characteristic of pressure delivery that force pumps provide.