Where should a listed pressure gauge be installed in relation to sprinkler system risers?

Installing a listed pressure gauge above and below each alarm check valve is critical for monitoring the water pressure conditions in the sprinkler system accurately. Placing a pressure gauge above the alarm check valve allows technicians to assess the pressure before the valve, helping to identify if there is adequate supply pressure available. Meanwhile, having a gauge below the valve provides insight into the pressure after the water has passed through the valve. This dual installation is essential for determining the operational efficiency of the system, diagnosing potential issues, and ensuring that the system maintains the necessary pressure to function properly in an emergency.

This practice aids in ensuring the alarm system operates effectively and can help in detecting leaks or other failures, contributing to the overall reliability and safety of the fire protection system. Understanding the pressure dynamics above and below the alarm check valve is vital for maintaining compliance with safety codes and regulations regarding sprinkler systems.