Meters head & static head

Pressure gauges are generally in bar/kPa or psi. However, in design we use meters water head (feet of head or psi).

Meters (feet) water head is the pressure of the water that would occur if it was elevated from the water discharge point. The pressure is determined by the water level in the tank, not the bottom of the tank. What we see in the images below is the static head. There is no flow in the system.

Metric Measurements

US Measurements

 

1 m head
= 9.782 kPa
= 0.09782 bar
= 1.488 psi
= 3.28 feet of head

1 psi = 2.31 feet of head
1 foot of head = 0.43 psi

 

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