Which mechanical device raises, transfers, or pressurizes fluids in a piping system?

• A. A valve.
• B. An electric motor.
• C. A snubber.
• D. A pump.

Answer: (D)

Pumps convert mechanical energy into fluid energy, enabling movement and pressure buildup in piping. They raise liquid against gravity, push it through long runs, and overcome friction losses by creating a head or pressure difference. In a piping system, you need a source of energy to drive flow; the pump provides that energy, drawing fluid from the supply and discharging it at higher pressure or through the desired path. Valves regulate or stop flow but don’t add energy. An electric motor supplies power to drive equipment, but by itself it doesn’t move fluids unless connected to a device like a pump. A snubber protects against pressure spikes and doesn’t move fluids. Therefore, the device that raises, transfers, or pressurizes fluids is a pump.