Which system has a nozzle positioned at each intake port?

• A. Direct Port Wet System
• B. Dry System
• C. Wet System
• D. Direct Port Dry System

Answer: (A)

Direct port systems are built to deliver extinguishing agent directly into each engine intake path. Having a nozzle positioned at every intake port ensures rapid, targeted cooling and flame knockdown right where fuel and air mix, which is crucial for stopping an engine fire quickly. When the system is described as wet, the agent is water-based, so it absorbs heat efficiently and blankets the area even more effectively; distributing it to every port means no part of the intake is left untreated, maximizing suppression.

Other setups typically release agent from a central point or use dry chemical that isn’t sprayed per intake port, so they don’t achieve the same level of immediate, uniform coverage inside each port. That per-port, wet delivery is why the direct port wet system is the best match.