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A widely accepted installation standard for commercial

single water supply

In buildings with standpipe systems, sprinkler systems are usually combined with them and fed


requires that sprinkler controls remain independent of standpipe systems

control valve

This enables the fire department to shut off the sprinklers during the rare occasions when a sprinkler pipe fails, or the sprinklers are not controlling the fire


Fire service personnel often need rapid access to

NFPA 13 requires

marking for all water supply control valves including main valves, pump valves, sectional valves, and zone valves

Valve handles are often located

high enough to be out of vandals' easy reach

Post indicator valves should be at least

40 feet from the buildings they serve

Fire pumps

are used to boost the water pressure in sprinkler and standpipe systems and to deliver the required amount of water

NFPA 20 contains reliability requirements for

the power supply to an electrically driven fire pump


requires installation of sprinklers through requires installation of sprinklers throughout

NFPA 20 requires electrical monitoring of

pump controllers for pump running, power failure, or controller trouble

Exterior valves should be placed

in locations accessible even during a fire incident

Inside and outside entrances to fire pump rooms should be labeled with


NFPA 13D and 13R primarily protect

lives rather than property.

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