Pressure gauges are usually color-coded, with a _____ area indicating the proper pressure zone.

Pressure gauges are usually color-coded, with a _____ area indicating the proper pressure zone.

• A. Red
• B. Green
• C. Blue
• D. Yellow

Answer: (B)

The gauge uses color-coded zones to show readiness, and the green area marks the proper operating pressure. When the needle sits in the green arc, the extinguisher is charged correctly and ready to use. If the indicator falls into red, it signals a problem—either the pressure is too low for reliable discharge or too high, which can be unsafe or indicate over-pressurization. The green zone is designed for quick, at-a-glance verification, so it’s the signal you rely on to know the unit is in good working order.

The gauge uses color-coded zones to show readiness, and the green area marks the proper operating pressure. When the needle sits in the green arc, the extinguisher is charged correctly and ready to use. If the indicator falls into red, it signals a problem—either the pressure is too low for reliable discharge or too high, which can be unsafe or indicate over-pressurization. The green zone is designed for quick, at-a-glance verification, so it’s the signal you rely on to know the unit is in good working order.