Acromet ACRO-SMART AS.1, Manual

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Acro-Smart Electronic Series January 2017
Acro-Smart Electronic Series
Pa
ge
6
4.4 Piping Arrangement
Should it be necessary to
install an isolating valve in
the discharge line, a relief
valve must be installed in
the line between the pump
and isolating valve.
WRONG
CORRECT
Metering pumps are positive displacement pumps and produce pulsating flow. Consequently there
is considerable line pressure loss and suction piping should be sized to ensure adequate NPSHA. If
piping extends for a considerable distance a suitable break tank or pulsation dampener should be installed near
pump.
the pump.
Avoid pockets or loops in piping where gas may accumulate.
WRONG
CORRECT
Where the pump discharge line connects
with a high pressure line, install a
non return valve as a safety precaution
.
The presence of solids in the pumped liquid can cause incorrect
pump valve operation and affect metering accuracy.
If solids are present install a strainer with 150 to 200 mesh
and large mesh surface in order to keep pressure drop as small
as possible and ensure that strainer does not become
quickly clogged.
CORRECT