Conversions

To convert to litres/sec

iGPM x 0.0757
m3/hr x 0.278
m3/min x 16.68
Metric tonnes/hr x 0.278 ÷ S.G.
Litres/min x 0.0167
Kilogrammes/hr x 0.000278 ÷ S.G.
USGPM x 0.063
Cubic feet/sec x 28.3
Cubic feet/min x 0.47
British tons/hr x 0.282 ÷ S.G.
British barrels/hr x 0.453

To convert to m3/hr

iGPM x 0.273
m3/hr x 3.6
m3/min x 0.06
Metric tonnes/hr x 1 ÷ S.G.
Litres/min x 60
Kilogrammes/hr x 0.001 ÷ S.G.
Kilogrammes/sec x 3.6 ÷ S.G.
USGPM x 0.227
Cubic feet/sec x 102
Cubic feet/min x 1.7
British tons/hr x 1.015 ÷ S.G.
British barrels/hr x 0.163

Pumping head conversions

To convert to metres

Feet x 0.305
kg/cm2 x 10 ÷ S.G.
PSI x 0.704 ÷ S.G.
Inches Hg x 0.345 ÷ S.G.
cm Hg x 0.1362 ÷ S.G.
Atmospheres x 10.35 ÷ S.G.
KN/m2 (KPa) x 0.102 ÷ S.G.
Bar x 10.2 ÷ S.G.

Power conversions

To convert to kilowatts

Horsepower x 0.746

To convert to horsepower

Kilowatts ÷ 0.746

KW =

m3/hr X total head in metres X S.G. ÷ 367.87 X pump efficiency

BHP =

IMP.GPM X total head in ft X S.G. 10 ÷ 33,000 X pump efficiency
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