What are the two types of pumps found on station?

What are the two types of pumps found on station?

• A. Peristaltic and Centrifugal
• B. Suction and Discharge
• C. Proportioning and Injection
• D. Pressure and Gravity

Answer: (C)

The key idea is how the foam solution is created by delivering the right concentrate into the water flow. On a foam transfer station, two pump roles are common: proportioning pumps and injection pumps. Proportioning pumps meter a precise amount of foam concentrate into the water stream to achieve the correct mixing ratio, ensuring the foam solution has the proper strength for effective firefighting. Injection pumps add concentrate into the system at specific points to adjust concentration or to support high-flow applications, giving flexibility when more concentrate is needed. Other options describe pump technologies or how a pump is driven rather than the functional roles used in this context, so they don’t fit the described setup.

The key idea is how the foam solution is created by delivering the right concentrate into the water flow. On a foam transfer station, two pump roles are common: proportioning pumps and injection pumps. Proportioning pumps meter a precise amount of foam concentrate into the water stream to achieve the correct mixing ratio, ensuring the foam solution has the proper strength for effective firefighting. Injection pumps add concentrate into the system at specific points to adjust concentration or to support high-flow applications, giving flexibility when more concentrate is needed.

Other options describe pump technologies or how a pump is driven rather than the functional roles used in this context, so they don’t fit the described setup.