Pressure system pumps are which type?

• A. Jet pumps
• B. Submersible centrifugal pumps
• C. Positive displacement pumps
• D. Airlift pumps

Answer: (B)

Pressure system pumps rely on a centrifugal mechanism placed in the water source to push water through the piping and raise system pressure. A submersible centrifugal pump is designed to be fully submerged and uses an impeller to impart velocity to the water, which is then converted into pressure to push water up to the pressure tank. This arrangement minimizes suction limits, reduces cavitation, and efficiently delivers water to the system at the required head. Jet pumps are typically surface-mounted or use a jet/venturi setup and are less suited for deep wells and high-head pressure. Positive displacement pumps deliver a fixed volume per cycle, which isn’t ideal for the continuous flow and pressure needs of many home pressure systems. Airlift pumps rely on compressed air to lift water and are inefficient for standard pressure systems. So, the typical choice for pressure systems is a submersible centrifugal pump.