What flow is required for a forward flow test for a system that does not have any connections for a flow test?

• A. The maximum flow that can be achieved
• B. Maximum through the inspector test connection
• C. No test is required
• D. Use largest auxiliary drain in the system

Answer: (A)

Forward flow testing checks the system’s ability to move water under the demand conditions it’s designed to meet. If there isn’t a flow-test connection available, the test is performed at the maximum flow the system can deliver. This approach pushes the system to its highest capable rate to reveal any restrictions, pressure losses, or pump/supply limitations that could impair performance during full-demand conditions. Testing at a lower or non-existent flow wouldn’t stress the system enough to uncover these issues, and using an inspector’s test connection isn’t possible here if none exists. An auxiliary drain would test drainage rather than the actual forward flow path, so it wouldn’t verify the system’s ability to supply water where needed. No test is not appropriate because verification of flow performance is required.