Chapter five of NFPA 25 requires a weekly fire pump test to be conducted without flowing water. Does this include the circulation relief valve?
No. The standard says “without flowing water” so no one flows water at minimum, rated and peak flows each week as required for the annual flow test. The circulation relief valve must flow water anytime the pump is running to provide proper cooling of the pump. Without this small flow of water, the pump will overheat resulting in damage to the pump shaft or other components.
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