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Hydraulics Manual > Hydro > Flashcards

Hydro Flashcards

1
Q

1 Cubic FT
(Cubic inches)

A

1728 Cubic Inches

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2
Q

1 Cubic Foot
(Gallons)

A

7.5

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3
Q

1 Cubic Foot
(Pounds)

A

62.5 pounds

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4
Q

1 Gallon
(Cubic inches)

A

231 Cubic Inches

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5
Q

1 Gallon of Water
(Weight LBS)

A

8.33 LBS

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6
Q

1 FT Column of Water
(Exerts a pressure of __ psi @ base)

A

0.434 psi

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7
Q

Column of 2.304 FT high exerts a pressure of ___ psi at its base

A

1 psi

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8
Q

50 FT of 1 3/4” hose contains
(Gallons)

A

6.24 gallons

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9
Q

50 FT Length of 1.88 hose contains
(gallons)

A

7.20 gallons

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10
Q

50’ of 2.5” hose
(Gallons)

A

12.74 gallons

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11
Q

50’ of 3” hose
(Gallons)

A

18.35

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12
Q

100’ of 4” hose
(Gallons)

A

65.25 gallons

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13
Q

100’ of 5” hose
(Gallons)

A

101.94 gallons

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14
Q

50 psi nozzle can be increased to ___psi for higher flow rate

A

65 psi

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15
Q

SB nozzles are 80psi, but can be increased to _____psi

A

100 psi

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16
Q

Centrifugal Pumps

A

Centrifugal pumps - pumps used on all modern fire apparatus. This type of pump takes advantage of incoming pressure. Water enters the eye of the pump then travels through one or more impellers.

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17
Q

Discharge

A

Discharge the quantity of water issuing from an opening expressed in gpm.

18
Q

Discharge Pressure

A

Discharge pressure actual velocity pressure of the water ( measured in psi) for an individual hose line.

19
Q

Discharge Velocity

A

Discharge velocity the rate at which water travels from an orifice and can be measured using a pitot gauge.

20
Q

Gutter Line

A

Gutter line-line run directly from a hydrant to an attack pumper .

21
Q

Head Pressure

A

Head pressure water pressure due to elevation . For each foot of elevation above the pump the pressure increases by 0.434 psi

22
Q

Rectangular Shaped Containers
(Formula)

A

L’ x W’ x D’ x 7.5

23
Q

Smooth Bore Nozzle Reaction

A

1.57 x d2 x NP

24
Q

Smooth Bore Nozzle Reaction

A

1.57 x d2 x NP

25
Q

Fog Stream Nozzle Reaction

A

.0505 x Q x square root of NP

26
Q

ADJUSTABLE GALLONAGE NOZZLE

A

12 to 60 GPM @100psi

27
Q

22 Red Fog Nozzle

A

22GPM @75psi

28
Q

Piercing/Penetrating Nozzle

A

125GPM @ 100psi

29
Q

Distributor Nozzle
- 2 1/2
- 1 1/2

A

250 GPM @ 100 psi
95 GPM @ 50 psi

30
Q

Cellar Nozzle
-2 1/2
-1 1/2

A
  • 350 GPM @100 psi
  • 160 GPM @ 100 psi
31
Q

TFT AUTOMATIC FLOW AND PRESSURES

A

500 GPM ———-90 psi
750 GPM———110 psi
1000 GPM —— 120 psi
1250 GPM——- 140 psi

32
Q

Akron Adjustable Flow Nozzle

A

500 GPM——— 100 psi
750 GPM———-110 psi
1000 GPM——-130 psi
1250 GPM——140 psi

33
Q

Elevation Pressure (Theoretical)

A

4.43 per 10 feet

34
Q

JS-10 Nozzle

A

100 GPM @ 100psi

35
Q

Foam Eductor Flows

A

95 to 125 GPM

36
Q

4” Starting Pressure

A

50 psi

37
Q

3” Starting Pressure

A

100 psi

38
Q

4” and 3” Starting Pressure

A

100 psi

39
Q

Dual 4” coefficient

A

.05

40
Q

MAXIMUM EXPECTED FLOW (Drafting)
- Side Intake

A

1750 GPM

41
Q

MAXIMUM EXPECTED FLOW (Drafting)
- Rear Intake

A

1500-1750 GPM

42
Q

MAXIMUM EXPECTED FLOW Front (Drafting)

A

900 GPM

Hydraulics Manual (2 decks)

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