In a manifold supplying halocarbon agents to a common outlet, containers must be:

• A. Interchangeable and of the same weight
• B. Same color coding
• C. Identical mix ratio
• D. Interchangeable and of one select size and charge

Answer: (D)

In a manifold that feeds halocarbon clean agents to a single outlet, all cylinders must deliver the same amount of agent under the same conditions. When containers are interchangeable and of one chosen size and charge, they share identical pressure–volume characteristics, so opening the manifold valve results in a uniform flow from every cylinder. This guarantees predictable discharge duration and even distribution of agent to the protected area. If sizes or charges differed, some cylinders would push more or less agent, causing uneven discharge, potential undercoverage in parts of the protected space, and difficulties in controlling the overall system performance. Color coding, weight differences, or mixing ratios aren’t the controlling factors for this setup; what matters is consistent size and charge so the manifold delivers a balanced, reliable discharge.