Which interval is specified for testing stand pipes with hose stations equipped with pressure reducing valves?

• A. Every 3 years
• B. Every 5 years
• C. Every 7 years
• D. Every 10 years

Answer: (B)

Periodic testing of standpipes with hose stations that have pressure reducing valves is done on a five-year interval. The reason for this interval is to verify that the pressure reducing valve continues to function properly and maintain the hose outlet pressure at the intended level under flow conditions. Over time, the PRV can drift or stick, which could cause hoses to be over-pressurized or under-pressurized during use. The test typically involves simulating use at the rated flow, checking the outlet pressure to ensure it stays within the design range, and inspecting for leaks or improper valve operation. Annual inspections cover general condition and basic function, while the five-year test specifically validates the PRV’s performance and the overall readiness of the standpipe system.