What is the purpose of a discharge pressure gauge?

What is the purpose of a discharge pressure gauge?

• A. To monitor pump performance and verify system maintains the required pressure
• B. To measure ambient temperature
• C. To verify battery charge
• D. To monitor fuel level

Answer: (A)

The discharge pressure gauge shows the pressure on the discharge side of the fire pump, i.e., the pressure the pump is delivering into the system. This reading is essential for confirming the pump is producing the required head to overcome system losses and elevation so the protected spaces receive adequate pressure when water is needed. During tests and normal operation, you compare the discharge pressure to the design requirement at the expected flow to verify the system will be pressurized correctly under demand. A lower-than-required discharge pressure indicates the pump or system may have issues—such as insufficient flow, valve partially closed, leaks, or suction restrictions—while an abnormally high reading can signal downstream issues or control problems that reduce system compatibility with design.

The discharge pressure gauge shows the pressure on the discharge side of the fire pump, i.e., the pressure the pump is delivering into the system. This reading is essential for confirming the pump is producing the required head to overcome system losses and elevation so the protected spaces receive adequate pressure when water is needed. During tests and normal operation, you compare the discharge pressure to the design requirement at the expected flow to verify the system will be pressurized correctly under demand. A lower-than-required discharge pressure indicates the pump or system may have issues—such as insufficient flow, valve partially closed, leaks, or suction restrictions—while an abnormally high reading can signal downstream issues or control problems that reduce system compatibility with design.