Static Water Supply Flashcards
Theoretical lift
33.8 feet
Maximum lift
25 feet
For every 1000 feet
Atmospheric pressure decreases by about _______
0.5 psi
Every fire pump in good repair should have a dependable lift of at least____________
14.7 feet
All fire dep pumping apparatus have their fire pumps rated when drafting from a lift of
10 ft
The height a column of water can be lifted in sufficient quantity to produce a reliable water flow
Dependable lift
The pump is only able to deliver 70% it’s capacity at
15 foot
The pump is only able to deliver 60 % its capacity at
20 foot of lift
The height of possible lift is not affected by the angle of the intake hose ,but is affected by the amount of ________that the priming device and by the atmospheric pressure.
Vacuum
As the length of a intake hose is increased , the capacity of the pump ( increases or decreases )accordngly
Decreases
The sum of the pump discharge pressure and then take pressure correction
Net pump discharge pressure
Are most commonly used to draft from portable water tanks and can draw water downt to a 1-2 inch depth
Low level strainers
Allow safe drafting from water as shallow as 1 foot
Low level strainer
Required vacuum for primer
22 inches of mercury
1 foot of lift =
.855 inches of mercury
