Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
9 Cards in this Set
- Front
- Back
|
Two main reasons for pressure loss in hose lines |
Hose frictional loss & effects of gravity |
|
|
The factors affecting pressure loss in hose lines |
Internal diameter of hose Output flow of water Height in metres above or below the water source Length of hose line |
|
|
How gravity affects pressure loss |
0.1 bar for every 1 metre above 0.1 bar for every 1 metre below 1 bar for every 10 metres height |
|
|
45mm hose working at 400lpm would have a loss of how much bar? |
1 bar |
|
|
A 45mm hose working at a flow rate of 130 or 230lpm would have what loss |
0.3 |
|
|
70mm working at 400lpm would loss? |
0.2 bar |
|
|
How much bar is lost per floor (3meters) |
0.3 |
|
|
If hoselines are twinned the amount of pressure lost to friction is? |
Quartered |
|
|
Lowest the rb101 can work |
3.5 |
