When testing hydrant nozzles, which procedure is included?

• A. Check for foreign material
• B. Flow nozzle at 500 psi
• C. Flow nozzle for at least one minute
• D. Operate nozzle through full range of motion

Answer: (D)

The test focuses on confirming the nozzle’s mechanical operability. Hydrant nozzles must be able to move freely from fully closed to fully open and be adjustable through all positions the operator might need in a real incident. Operating the nozzle through its full range of motion checks that the control mechanism, stem, and seals aren’t binding or misaligned and that the nozzle can be directed and adjusted as required. This ensures reliable, immediate functionality when firefighting.

Other steps like flowing at a fixed pressure or for a short period assess flow capability, not the nozzle’s ability to be positioned and operated. Checking for foreign material is part of general inspection, but it doesn’t verify that the nozzle can be moved through all intended positions.