Liting from Open Water and LPP Flashcards
1
Q
What is max theoretical lift under 1 bar of atmospheric pressure?
A
10m
2
Q
What is max practical lift?
Why?
A
8m
overcoming inertia
frictional loss
pump entry loss
imperfect vacuum
temperature of water
atmospheric pressure
3
Q
What is minimum height to submerge strainer to avoid a vortex?
A
300mm
(3x diameter of suction hose)
4
Q
What is the measure of -0.1 on the compound guage on the vacuum side
A
-0.1 = 1m lift
5
Q
Rosenbauer LPP
Weight
Engine
Fuel
Output
Max Output
Max Duration
Max Pressure
Battery
A
84kg
4 stroke 18hp
Unleaded
800lpm at 5bar
1000lpm at 4bar
1.5 hours at 5bar
8bar
12v sealed for life
6
Q
Max distance between lengths for 70mm water relay?
A
8 lengths / 180m flat
6 lengths / 140m gradient
7
Q
Max distance between lengths for 90mm water relay?
A
15 lengths / 450m flat
12 lengths / 360m gradient
