Ch 13 - Hose Ops And Hose Streams Flashcards
1
Q
Hydrant standards
A
-4”+ steamer connection
-two 2.5” connections
-5” valve opening
-6” connection to water main
2
Q
Water to steam volume conversion ratio
A
1:1700
3
Q
Smooth bore nozzle pressure
A
50psi
4
Q
Smooth bore master stream tip pressure
A
80psi
5
Q
Fog nozzle pressure
A
Typically 100psi, ours 50psi
6
Q
Hose stream reach limiting factors
A
-gravity
-velocity loss
-water droplet friction with air
-wind
7
Q
Minimum master stream gpm
A
350gpm
