Pump Discharge Pressure (PDP) Hydraulics Calculator

Determine master pump panel discharge settings for handlines, master streams, standpipe operations, and elevated master stream evolutions.

🚨 Active Fireground Emergency For active structural fires or life hazards, dial immediate emergency dispatch Call: 911 / 112

📋 Standard Operating Guidelines & Verification Protocol

Verified Standards

Verify full PPE compliance and secure personal accountability tags prior to entry. Confirm primary water supply established and verify uninterrupted supply line integrity. Coordinate tactical ventilation with interior fire attack nozzle advancement. Designate Rapid Intervention Team (RIT) equipped with dedicated hose line and rescue air pack. Execute regular Personnel Accountability Reports (PAR) every 15-20 minutes or after tactical shifts.

Fire Apparatus Pump Operator Hydraulics

The Pump Operator (Engineer or Driver) must supply adequate water pressure to ensure fire attack crews can safely advance charged handlines. Under-pumping results in inadequate GPM and dangerous steam conditions, while over-pumping causes nozzle whip and burst hose jackets.

Standard Operating Pressures

Smooth Bore Handline: 50 PSI nozzle pressure (NP)
Smooth Bore Master Stream: 80 PSI nozzle pressure (NP)
Standard Fog Nozzle: 100 PSI (or 50/75 PSI for modern low-pressure fog variants)
Elevation Pressure (EP): 0.5 PSI per foot of elevation, or 5 PSI per floor above ground floor (-5 PSI if below grade)
Appliance Loss (AL): 0 PSI below 350 GPM; 10 PSI for wyes/siamese at 350+ GPM; 25 PSI for master streams