NFPA 20

Key requirements (8)

• Stationary fire-protection pumps — electric, diesel, steam-driven.
• Pump types: horizontal split-case, end-suction, vertical-inline, vertical-turbine, multistage.
• Performance: minimum 100% rated flow at 65% rated head and 150% rated flow at 65% head (rough rule).
• Listed/labeled pumps (UL, FM) required.
• Diesel driver: dedicated fuel for ≥ 8 hours; 2 batteries; weekly run test.
• Jockey pump (pressure maintenance): not for fire flow — sized to maintain system pressure.
• Suction conditions: positive head preferred; flooded suction with ≥ 150% rated capacity available.
• Annual full-flow testing required.