7. Theoretical Pressure Calculations Flashcards Preview

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Flashcards in 7. Theoretical Pressure Calculations Deck (8)
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1

$$$

FL=

FL=CQ^2L

2

$$$

Appliance pressure loss

It is assumed that there is a __ psi a loss for flows less than 350 GPM and a __ psi loss for each appliance in a hose assembly when flowing 350 GPM’s or greater.

0 psi

10 psi

3

A friction loss of __ psi for all master stream appliances regardless of flow will be used.

25psi

4

EP =

EP= 0.5H

5

Elevation pressure loss in a multi story building

EP=

EP = 5 psi x (number of stories -1)

6

When considering pressure loss in an elevated waterway assume a loss of __ psi for the waterway and master stream appliance.

25 psi

7

Solid stream nozzle=
Solid steam master stream=
fog nozzle=
Low pressure fog=

50
80
100
50 or 75

8

$$$

When required to discharge a specified pressure, fire apparatus pump take advantage of the water pressure coming into the pumps water supply and add the required pressure to achieve ___

Net pump Discharge pressure NPDP