There are 3 parts to a priming system.

• A. Valve; pump; Oil Tank
• B. Valve; filter; Oil Tank
• C. Pump; Reservoir; Gauge
• D. Valve; Impeller; Reservoir

Answer: (A)

When priming a pump, you need a way to move priming oil into the pump, a supply of that oil, and a means to control the flow. The three parts that accomplish this are a valve, the priming pump, and an oil tank. The valve regulates and isolates the priming circuit, allowing air to be vented and priming oil to enter when needed. The pump (primer) actually moves the oil from the oil tank into the pump to fill the impeller housing and push the air out, creating the suction needed to draw water. The oil tank provides the reservoir of priming oil needed for this process.

Other options include components like filters, gauges, reservoirs, or impellers, which aren’t the essential trio used to prime the pump. The priming system centers on control (valve), actuation (pump), and supply (oil tank).