Tecfluid COVOL Series - Manual (Page 6)

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3.2 Open discharge
When the flow measurement is to be made before an open discharge, it is necessary to
install the flowmeter in a section of pipe with a trap which avoids the presence of air inside
the meter.
3.6 Pumps
Pumps must always be installed before the flowmeter in order to avoid cavitations.
3.3 Position
The installation and position of the flowmeter can be either vertical, horizontal or inclined.
The flow direction does not affect the flowmeter accuracy.
3.4 Straight pipe sections
Straight pipe run is not required, the flowmeter can be installed just before or after
disturbing elements.
3.5 Valves
Regulating or shut-off valves must always be installed after the flowmeter, in order to
assure that pipe is full of liquid.