Board To Memorize Flashcards
Handline Tip Sizes NP/GPM
50 PSI
7/8" - 160 GPM 15/16" - 180 1" - 200 1 1/8" - 250 1 1/4" - 325
Master Stream Tip Sizes NP/GPM
80 PSI
1 1/4" - 400 GPM 1 3/8" - 500 1 1/2" - 600 1 5/8" - 700 1 3/4" - 800 1 7/8" - 900 2" - 1000
SM20 NP/GPM
100 PSI
60 - 200 GPM
SM30 NP/GPM
100 PSI
75 - 325 GPM
Akromatic NP/GPM
100 PSI
500 - 2000 GPM
TFT Metro NP/GPM
1 3/4” lines
50 PSI
150 GPM
Broken Stream Nozzles NP
100 - 150 PSI
Vindicator (Handline) Tip Sizes NP/GPM 1 3/4” & 2 1/2”
1 3/4”
250 GPM @ 50 PSI
425 GPM @ 100 PSI
2 1/2”
325 GPM @ 50 PSI
500 GPM @ 100 PSI
Vindicator (Masterstream) NP/GPM
1000 GPM @ 85 PSI
675-1000 GPM for monitors
PDP (definition/equation)
Pump Discharge Pressure
NP + FL + AP +(-) EL
Friction Loss Equation
C (Q/100)² (L/100)
Friction Loss Coefficients by Hose Size
1 3/4” - 15.5
2 1/2” - 2
5” - 0.08
When to Factor in PSI When using an Appliance
≥ 350 GPM = 10 PSI
Aerial/Deck Gun/Ground Monitor PSI loss or whatever
15 PSI
TFT Metro 2
2 1/2” Lines only
50 PSI
250 GPM
Solid Tip Discharge (GPM) Equation
(29.7) (D²) (√NP)
Akron Piercing Nozzle GPM/PSI/Max Operating Pressure
125 GPM @ 100 PSI
Max Operating Pressure: 200
Nozzle Operating Pressures (for calculations)
- Solid Tip/Vindicator
- Solid Tip Master Streams
- Vindicator Master Stream
- ALL Fog Streams
- All TFT Fog Stream Handlines
-Broken Stream
-Solid Tip/Vindicator:
50 PSI
-Solid Tip Master Streams:
80 PSI
- Vindicator Master Stream:
85 PSI
-ALL Fog Streams:
100 PSI
-All TFT Fog Stream Handlines:
50 PSI
-Broken Stream:
100-150 PSI
Nozzle Pressure/Reaction Formulas
- Solid Tip
- Fog Tip
- Solid Tip
(1. 57) (D²) (NP) - Fog Tip
(0. 0505) (GPM) (√NP)
Friction Loss GPM/PSI per Hundred Feet 1 3/4” Hose
100 GPM: 15 PSI 125 GPM: 25 PSI 150 GPM: 35 PSI 175 GPM: 45 PSI 200 GPM: 65 PSI
Appliance Pressure
- Hoseline Appliance - Master Stream Appliances
-Hoseline Appliance:
≥ 350 GPM = 10 PSI
-Master Stream Appliances
15 PSI for all deck guns, portable monitors, aerial master streams
Elevation Pressure
0.434 PSI per foot
5 PSI per floor (remember first floor doesn’t count)
PDP Formula/Max Pressure for Deck Gun
PDP = NP + AP
Max Flow = 1,250 GPM
15 PSI friction loss for appliance
PDP Formula for Portable Monitor/Max Pressure
15 PSI friction loss for appliance
Add friction loss for supply hose and nozzle pressure
Max Pressure 200 PSI
Sprinkler Systems
2 1/2” hoselines in 50’ sections to reduce FL
-Maintain PDP of 150 PSI
Fire Flow Formula
GPM’s needed (NFF) = (area/3) (% of structure involved)
Area (length times width) divided by three, then multiply by percent of structure involved
Ladder Nozzle PSI
Fog: 100 PSI
Solid: 80 PSI
Ladder 5 Fog: 85 PSI
Vindicator: 85 PSI
