🔍 Key Concepts

• P-tank (pressure tank) operation in pneumatic bulk systems • Difference between pressurizing the tank and moving/fluidizing the cargo • Location and function of a jet air line relative to fill line, discharge line, and tank air supply

💭 Think About

• Think about what needs to happen to dry bulk material (like cement or grain) so it will move easily through a pipeline instead of just sitting in the bottom of the tank. • Which part of the system actually raises the overall tank pressure, and which part is aimed at the material in the discharge line? • Ask yourself: does a jet air line usually act directly on the tank volume, or does it inject air into the product stream to change how the material behaves in the pipe?

✅ Before You Answer

• Identify which choice describes changing how the dry material behaves versus simply raising tank pressure. • Consider where a jet air line nozzle would logically be placed: inside the tank, in the fill line, or in/near the discharge line. • Eliminate any option that simply repeats the basic job of the main air supply that pressurizes the P-tank.