NFPA 750 defines a low-pressure water mist system as one that operates at or below
A.
125 psi (8.6 bar).
B.
150 psi (10.3 bar).
C.
175 psi (11.9 bar).
D.
200 psi (13.8 bar).
The Answer Is:
C
This question includes an explanation.
Explanation:
According to NFPA 750-2019, a low-pressure water mist system is one that operates at or below 175 psi (11.9 bar) at the nozzle inlet. This is the maximum pressure limit for this classification of water mist systems.
References: NFPA 750-2019: Standard on Water Mist Fire Protection Systems, Section 3.3.17.11 and Section 4.2.12.
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