Pump Numbers

Question 1

2 1/2”

Answer 1

90 psi
50 psi at the nozzle
40 psi for 250’
15 psi every 100’

For reverse add 10 psi for every 100’ of 3” in the road

Question 2

Deck gun

Answer 2

100 psi
80 psi at the nozzle
15 psi for the appliance
5 psi for height

Question 3

Truck pre pipe

(PI)

Answer 3

120 psi at inlet gauge
10 psi for every 100’ 3” in the road

Question 4

Truck 1

Answer 4

150 psi at the base of the gauge
DO NOT EXCEED 200 psi
1 or 2 lines of 3” for 1 stream
3 or 4 lines of 3” for 2 streams

Question 5

Portable ladder pipe (T2,3,4)

Answer 5

80 psi at the nozzle
15 psi for the appliance
20 psi for every 100’ of 3” (truck hose)
30 psi back pressure at 70’ or 1/2 psi per foot
5 psi for Siamese
10 psi for every 100’ of 3”
(150-160)

Question 6

20-10-7 rule

Answer 6

20% Friction loss | 1 Line
10% Friction loss | 2 lines
7% Friction loss | 3 lines

Question 7

Pump engaged

Answer 7

Oil | 40-60
Speedometer | 5-20 mph
Heat/Temp Gauge | 180-200 PA | 200-210 New pieces

Question 8

High rise

Answer 8

120 psi
45 for 150 ft. 1 3/4
50 nozzle
25 stand pipe

5 per. floor
10 per 3 in.

Question 9

Foam

Answer 9

200 PSI at the inlet of the eductor
Hose distance from the eductor should not exceed 200 ft.

Question 10

Pistol Grip

Answer 10

50 psi
50 ft.
150 GPM

Question 11

Relay

Answer 11

Source pump 175 psi
Set pressure relief valve
700 ft. of 3” will yield 1300 Gpm