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Flashcards in Hydraulics Deck (11):
1

Conversion factors

3/4 = 25
1 = 9
1 1/2 = 3.6
1 3/4 = 2
3 = .67 (2/3)
3 1/2 = .4 (4/10)
4 = .25 (1/4)

2

Maximum pump pressures

booster line- 400
single jacket/ wildland- 200
double jacket- 300
double jacket high pressure- 600
Hard suction- 150

3

sprinkler PSI and gpm

25psi / 30GPM

4

Appliance loss PSI?

15 for deluge or monitor
25psi for standpipe, ladder pipe

5

wildland tip sizes and gpm

3/16" - 7
1/4" - 13
3/8" - 30

6

Hand line tip sizes and gpm

1/2 - 50
5/8 - 80
3/4 - 120
7/8 - 160
1 - 210
1 1/8 - 270

7

Master streams size and gpm

1 1/8 - 300
1 1/4 - 400
1 3/8- 500
1 1/2 - 600
1 3/4 - 800
2 - 1100

8

Immediate pump pressure for hand lines?

gravity gain/loss plus nozzle pressure

9

rule of 12's gpm range?

180-320

10

friction loss rate from 0 to 170

<100 = 1 FLR
100 = 2
110 = 2
120 = 3
130= 3
140 = 4
150 = 5
160 = 5
170 = 6

11

Intake pressure drop for 3, 2, 1 like lines

10% drop- 3 more like lines
15%- 2
25%- 1