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8 Cards in this Set
- Front
- Back
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What are the 2 main reasons for reduction in pressure |
Frictional loss in hose lines Gravity when working above the water source |
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The main factors influencing pressure loss are.. |
Diameter of the hose Output of water Height in meters above/below water source Length of hose line |
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Fill in the blank.. Frictional loss in 45mm is approximately.... Times greater than 70mm hose and ..... Times greater than 90mm hose for the same flow rate |
5x greater & 32 times greater |
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The frictional loss in a 45mm hose is.... |
1 bar per length |
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The frictional loss in a 70mm hose is... |
0.2 bar |
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The pressure loss when working 1m above water supply is.... |
0.1 bar per metre |
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The pressure gain for every meter below water source is.. |
1 bar per meter |
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So if you had 1x 70mm & 2x 45mm working x6m above ground the pressure loss will be? |
2.8 bar |
