Pump Discharge Pressure Calculator
PDP = NP + FL + EL + appliance loss · NFPA 1002 / IFSTA
Nozzle type
Smooth bore handline — 50 psi
Fog / combination — 100 psi
Low-pressure fog — 75 psi
Smooth bore master stream — 80 psi
Custom
Nozzle pressure (psi)
Flow (gpm)
Hose size
1¾″ (C 15.5)
2″ (C 8)
2½″ (C 2)
3″ (C 0.8)
4″ (C 0.2)
5″ (C 0.08)
Length (ft)
Elevation (ft, +/-)
Appliances
Gated wye (+10)
Siamese (+10)
Standpipe (+25)
Aerial / deck gun (+25)
Pump discharge pressure
—
psi
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