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EN 12845 / NFPA 13

K-factor → flow at pressure

Sprinkler discharge from K-factor and operating pressure (Q = K·√P).

Metric: K in L/min/bar^0.5, P in bar, Q in L/min. Imperial: K in gpm/psi^0.5, P in psi, Q in gpm.

Result
Flow per sprinkler
80 L/min
Flow per sprinkler
21.14 gpm

Formula: Q = K · √P

Reference: EN 12845 / NFPA 13

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