Hydraulic Solution


Technical Information

USEFUL FORMULAS and CALCULATORS

Index:

 

 

 

 

 

Area of a circle  =  π d2
                                     4
Where d is the diameter

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Pump Input Power [kW]  =  Pressure [bar] x Flow [lpm]
                                                        600 x Efficiency (%)

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CONVERSION FACTORS

Length

 

 

 

 

 

Inch

25.4

Millimetre (mm)

Foot

0.3048

Metres (m)

Yards

0.9144

Metres (m)

Miles

1.61

Kilometres (km)

 

 

 

Mass (Weight)

 

 

Multiply

by

To get

Ounce

28.35

grams

Pound

0.454

Kilograms (kg)

Tons (Long) 2240 lb

1,016.05

Kilograms (kg)

Tons (Short) 2000lb

907.18

Kilograms (kg)

Tonne

1000

Kilograms (kg)

 

 

 

Volume

 

 

Multiply

by

To get

Gallon (Imp.)

4.55

Litres (l)

Gallon (US)

3.785

Litres (l)

Cubic Inch

16.38

Cubic centimetre (cc)

Cubic Inch

16.38

Millilitre (mm)

Cubic Foot

0.0283

Cubic metres (m3 )

Cubic Foot

28.3

Litres (l)

 

 

 

Pressure

 

 

Multiply

by

To get

lbs/sq.in. (psi)

0.069

Bar

lbs/sq.in. (psi)

6.9

kiloPascals (kpa)

Atmosphere (atm)

1.013

Bar

Kg/sq.cm

98.1

kiloPascals (kpa)

Bar

100

kiloPascals (kpa)

megaPascal (MPa)

10

Bar

inch mercury (Hg)

3.387

kiloPascals (kpa)

Foot water (H2O)

2.99

kiloPascals (kpa)

 

 

 

Power and Torque

 

 

Multiply

by

To get

Horsepower (hp)

0.7457

Kilowatts (kW)

Foot lbs (lbf/ft)

1.356

Newton meters (Nm)

Foot lbs (lbf/ft)

0.113

Newton meters (Nm)

 

 

 

Flow

 

 

Multiply

by

To get

gal/min (Imp)

4.55

Litres/min (lpm)

gal/min (US)

3.785

Litres/min (lpm)

std.cu.ft./min (air)

0.472

Litres/sec (l/sec)

 

 

 

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  DISPLACEMENT OF GEAR PUMP - Using the Gear size
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  DISPLACEMENT OF GEAR PUMP - Using the Housing size

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