Quick Reference Chart

Question 1

1-3/4” Handline Tips 50 PSI

Answer 1

50 PSI

3/4” - 100 GPM at 50 PSI
7/8” - 150 GPM at 50 PSI
15/16” - 180 GPM at 50 PSI

Question 2

2-1/2” Handline Tips 50 PSI

Answer 2

50 PSI

1” - 200 GPM
1-1/8” - 250 GPM
1-1/4” - 300 GPM

Question 3

Master Stream and Ladder Pipes 80 PSI NP

Answer 3

80 PSI NP

1-1/4" - 400 GPM
1-3/8" - 500 GPM 
1-1/2" - 600 GPM
1-3/4" - 800 GPM
2" - 1000 GPM

Question 4

1-3/4” Handline Nozzles 150’ or 200’ Pre-Connects

Answer 4

Akron TurboJet 75 PSI:
95, 125, 150 GPM, pump at 110 PSI*
200 GPM, pump at 150 PSI*

Akron TurboJet 100 PSI:
95, 125, 150 GPM, pump at 135 PSI*
200 GPM, pump at 175 PSI*

Akron Saber Jet Combination Nozzle:
Pump at 125 PSI for both*:
135 GPM Fog
150 GPM Solid (7/8")
180 GPM Solid (15/16')

*Reduce pressure by 10-15 PSI for 100’ line

Question 5

Residual Pressure Drops

Answer 5

Less than 10% - 3 additional lines or current GPM x3
10% to 20% - 2 additional lines or current GPM x2
20% to 25% - 1 additional line of current GPM x1
Greater than 25% - No additional lines of equal GPM

Question 6

Relay Pumping

Answer 6

50 PSI plus 10 PSI per 100’ of 5” Hose
Adjust as needed to maintain 50 PSI of residual pressure on engine being supplied
DO NOT EXCEED 200 PSI

Question 7

Standpipe/Sprinkler Systems

Answer 7

Standpipe:
Initial pressure 100 PSI. Be prepared to adjust based on circumstances

Sprinkler:
Maintain 150 PSI

Question 8

Big Water

Answer 8

Deck Gun:
Add 10-25 PSI FL to NP (80 PSI smooth bore, 100 PSI fog)

Large Ground Monitor:
Add 10-25 PSI FL to NP, plus additional 25 PSI per 100’ of 2-1/2” siamese hose
Mini-monitor add 40 PSI per 100’ of 2-1/2”

Ladder Pipe:
PDP = 150 PSI within 100’
Adjust based on aerial Flowmeter. At full ladder height expect to flow 180 PSI.
DO NOT EXCEED 200 PSI

Question 9

Governor Modes

Answer 9

PSI:
Pumping Handlines
Pumping Ladder Pipes
Supplying Sprinkler/Standpipes

RPM:
Relay Pumping
Charging LDH
Establish Draft
PSI Mode Malfunction
High Rise above 300 PSI

Question 10

Foam Application

Answer 10

Nozzle GPM must match Eductor

75 or 100 PSI Akron TurboJet and foam tube is preferred setup
Max distance from eductor to nozzle:
250’ for 75 PSI Nozzle
150’ for 100 PSI Nozzle

Foam Concentrate required at 3%:
500 gallon tank - 15 gallons (3 pails)
600 gallon tank - 18 gallons (4 pails)

Spill: start at 100 PSI PDP and increase until adequate foam production

Fire: start w/200 PSI PDP at the eductor inlet to obtain 125 GPM

Question 11

Drafting

Answer 11

Transfer Valve: Volume
Governor: RPM
Motor Speed: 1000-1200 RPM

Primer Time Limits:
45 sec for 1500 GPM
90 sec for 1750 to 2000 GPM

Max lift 25’