Marmic Fire & Safety

NFPA 25 ITM Quick Reference Guide

Sprinkler Systems & Fire Pumps β€” Inspection, Testing & Maintenance Intervals

2026 Edition
Inspection Testing Maintenance *Semiannually where indicated
Category System Daily / Weekly Monthly Quarterly*Semiannually where noted Annually 3+ Years
πŸ”Ή Sprinkler System
Sprinkler
System
  • Backflow prevention assemblies (reduced pressure & reduced pressure detector assemblies) Β§13.7.1
  • Control valves; unsecured or unsupervised Β§13.3.2.1
  • Dry pipe valves/quick-opening devices; enclosure (subject to freezing) Β§4.1.2.5
  • Deluge valve; enclosure (subject to freezing) Β§4.1.2.5
  • Preaction valves; enclosure (subject to freezing) Β§4.1.2.5
  • Gauges (monitoring air or nitrogen pressure) Β§13.2.4.1.3
  • Gauges; operable and not physically damaged Β§13.2.4.1.1
  • Control valves; locked or supervised Β§13.3.2.1.1
  • Dry pipe valves/quick-opening devices; exterior Β§13.4.5.1.2
  • Deluge valves; exterior Β§13.4.4.1.1
  • Preaction valves; exterior Β§13.4.3.1.1
  • Air compressors or nitrogen generators Β§13.10.2
  • Gauges (monitoring water pressure) Β§13.2.4.1.2
  • Control valves; electronically supervised Β§13.3.2.1.2
  • Supervisory signal devices (except valve supervisory switches) Β§13.2.5.1
  • Waterflow alarm devices Β§13.2.3
  • Fire department connection Β§13.8.1
  • Sprinkler pressure-reducing valves Β§13.5.1.1
  • Valve supervisory signal initiating device Β§13.3.2.1.3
  • Hose valves Β§13.6.1
  • Alarm valves; exterior Β§13.4.1.1
  • Pressure-reducing valve Β§13.5.1.1
  • Hanger/braces/supports Β§5.2.3
  • Hydraulic design information sign Β§5.2.5
  • Information signs Β§5.2.7
  • Antifreeze information sign Β§5.2.8
  • Pipe and fittings Β§5.2.2
  • Sprinklers Β§5.2.1
  • Sprinklers (spare) Β§5.2.1.4
  • Dry pipe valves/quick-opening devices; interior Β§13.4.5.1.3
  • Deluge valve; interior Β§13.4.4.1.2
  • Preaction valves; interior Β§13.4.3.1.2
  • Pressure-reducing hose connection Β§13.5.2.1
  • Pressure-reducing hose valve with rack assembly Β§13.5.3.1
  • Low-temperature alarm Β§4.1.2.5.2
5 Years
  • Check valves; interior Β§13.4.2.1
  • Dry pipe valves/quick-opening device strainers, filters, orifices Β§13.4.5.1.4
  • Deluge valve; strainers, filters, orifices Β§13.4.4.1.3
  • Preaction valves; strainers, filters, orifices Β§13.4.3.1.3
  • Alarm valves; interior Β§13.4.1.2
  • Alarm valves; strainers, filters, orifices Β§13.4.1.2
  • Backflow prevention assembly; interior Β§13.7.1.3
Miscellaneous
  • Corrosion inhibitor systems (per manufacturer) Β§13.11
πŸ”Έ Fire Pumps
Fire
Pumps
  • Diesel pump system Β§8.2.2(4)
  • Electric pump system Β§8.2.2(3)
  • Pump Β§8.2.2(2)
  • Pump house/room Β§8.2.2(1)
  • Steam pump system Β§8.2.2(5)
  • Engine crankcase breather Β§8.1.1.2.12
β€”
  • Alignment Β§8.3.6.4
  • Cable/wire insulation Β§8.1.1.2.5.1
  • Exhaust system, drain condensate trap, and silencers Β§8.1.1.2.13
  • Flexible hoses and connections Β§8.1.1.2.11
  • Fuel tank vents and overflow Β§8.1.1.2.10
  • Plumbing parts – inside and outside of panels Β§8.1.1.2.6
  • Printed circuit board corrosion (PCBs) Β§8.1.1.2.4
  • Shaft movement or endplay while running Β§8.1.1.2.1
  • Suction screens Β§8.3.3.16
β€”
πŸ”Ή Sprinkler System
Sprinkler
System
β€” β€”
  • Waterflow alarm devices (mechanical) Β§13.2.3.1.2
  • Waterflow alarm devices (vane- & pressure switch-type) (semiannually) Β§13.2.3.2.2
  • Control valve; supervisory switches (semiannually) Β§13.3.3.5.1
  • Dry pipe valves/quick-opening devices; priming water Β§13.4.5.2.1
  • Dry pipe valves; quick-opening devices Β§13.4.5.2.4
  • Preaction valves; low and high air pressure alarms Β§13.4.3.2.11
  • Preaction valves; priming water Β§13.4.3.2.1
  • Deluge and preaction valve solenoid supervisory Β§13.4.4.2.14
  • Master pressure-reducing valve (partial flow) Β§13.5.4.2
  • Antifreeze solution Β§5.3.4
  • Backflow prevention assemblies Β§13.7.2
  • Control valve; position and operation Β§13.3.3.1
  • Deluge valve; trip test (or 3 years) Β§13.4.4.2.3
  • Dry pipe valves/quick-opening devices; trip test (or 3 years) Β§13.4.5.2.2
  • Dry pipe valves/quick-opening devices; low air pressure alarm Β§13.4.5.2.6
  • Main drain (or quarterly) Β§13.2.2
  • Preaction valves; trip test (or 3 years) Β§13.4.3.2.2
  • Hose valves (or 3 years) Β§13.6.2
  • Supervisory signal devices (except valve supervisory switches) Β§13.2.5.2
  • Master pressure-reducing valve (full flow) Β§13.5.4.3
  • Air compressors or nitrogen generators Β§13.10.3
  • Pressure-reducing valve (partial flow) Β§13.5.1.3
  • Low-temperature alarm Β§13.4.3.2.12
3 Years
  • Dry pipe valves/quick-opening devices; air leakage Β§13.4.5.2.9
  • Dry pipe valves/quick-opening devices; full flow trip test Β§13.4.5.2.2.2
  • Preaction valves; air leakage Β§13.4.3.2.6
5 Years
  • Gauges Β§13.2.4.2
  • Extra-high or greater temperature sprinklers Β§5.3.1.1.1.3
  • Sprinklers in harsh environment Β§5.3.1.1.2
  • Pressure-reducing valve (full flow) Β§13.5.1.4
  • Pressure-reducing hose valve Β§13.5.2.3
  • Pressure-reducing hose valve with rack assembly (full flow) Β§13.5.3.2
10+ Years
  • ESFR and CMSA sprinklers (@ 20 yrs & every 10 thereafter) Β§5.3.1.1.1.2
  • Sprinklers (@ 50 yrs & every 10 thereafter) Β§5.3.1.1.1
  • Sprinklers (@ 75 yrs & every 5 thereafter) Β§5.3.1.1.1.4
  • Dry sprinklers (@ 20 yrs & every 10 thereafter) Β§5.3.1.1.1.5
  • Fast-response sprinklers, other than ESFR/CMSA (@ 25 yrs & every 10 thereafter) Β§5.3.1.1.1.1
πŸ”Έ Fire Pumps
Fire
Pumps
  • Diesel-engine-driven fire pump Β§8.3.1.1
  • Electric-motor-driven fire pump (or monthly) Β§8.3.1.2
  • Electric-motor-driven fire pump (or weekly) Β§8.3.1.2
  • Automatic transfer switch and emergency/standby generators (per NFPA 110) Β§8.3.6.2
  • Fuel tank, float switch, and supervisory signal for interstitial space Β§8.1.1.2.7
  • Diesel fuel testing Β§8.3.4.1
  • Fire pump alarm signals Β§8.3.3.14
  • Pump performance (flow) Β§8.3.3.1
  • Supervisory signal for high cooling water temperature Β§8.1.1.2.8
  • Electronic control module Β§8.3.3.17
  • Flow meters Β§8.3.3.5.3
  • Main pressure relief valve Β§8.3.3.12
β€”
πŸ”Ή Sprinkler System
Sprinkler
System
β€” β€” β€”
  • Sprinklers and automatic spray nozzles protecting commercial cooking equipment and ventilation systems Β§5.4.1.8
  • Control valves (outside screw and yoke) Β§13.3.4
  • Dry pipe valves/quick-opening devices Β§13.4.5.3
  • Preaction valves Β§13.4.3.3
  • Deluge valves Β§13.4.4.3
Miscellaneous / Per Manufacturer
  • Alarm valves Β§13.4.1.3
  • Backflow prevention assemblies Β§13.7.3
  • Check valves Β§13.4.2.2
  • Hose valves as needed Β§13.6.3
  • Air compressors or nitrogen generators Β§13.10.4
  • Corrosion-inhibiting systems Β§13.11
πŸ”Έ Fire Pumps
Fire
Pumps
β€” β€” β€”
  • Batteries Β§8.1.1.2.15
  • Circulating water filter Β§8.1.1.2.22
  • Control and power wiring connections Β§8.1.1.2.16
  • Electrical connections Β§8.1.1.2.2
  • Engine lubricating oil (or 50 operating hours) Β§8.1.1.2.17
  • Engine oil filter (or 50 operating hours) Β§8.1.1.2.18
  • Fuel filter (or 50 operating hours) Β§8.1.1.2.19
  • Fuel tank β€” check for water and foreign materials Β§8.1.1.2.9
  • Measure back pressure on engine turbo Β§8.1.1.2.14
  • Sacrificial anode Β§8.1.1.2.21
  • Pressure gauges and sensors Β§8.1.1.2.23
  • Diesel active fuel maintenance system (or per manufacturer) Β§8.3.4.3
  • Pump and motor bearings and coupling (or as required) Β§8.1.1.2.3
5 Years or Per Manufacturer
  • Power transmission components with elastomeric materials (including torsional couplings) Β§8.1.1.2.24
Miscellaneous / Per Manufacturer
  • Controller β€” ITM per manufacturer Β§8.5
  • Diesel engine system β€” ITM per manufacturer Β§8.5
  • Electric motor and power system β€” ITM per manufacturer Β§8.5

This reference guide is provided for informational purposes based on the 2026 edition of NFPA 25. Always consult the current edition of NFPA 25 and your local Authority Having Jurisdiction (AHJ) for compliance requirements applicable to your facility. © 2025 Marmic Fire & Safety.