Suction - Acromet ACRO-SMART AS.1 Manual

4.1.4 Piping should be as short and straight as possible and arranged to
avoid loops or pockets where gas may accumulate.
4.1.5 All piping should be separately supported close to the pump to avoid
imposing pipe loads on the pump.
temperature liquids, measures should be taken to prevent distortion
of piping imposing loads on the pump.
4.1.6 All pipe work should be flushed clean of any solids which may be
present in the pipe work (i.e. weld slag, dirt following construction or
repair) before final connection to the pump and start-up.
4.1.7 Make provision in discharge piping where necessary to facilitate initial
priming of pumps against reduced pressure.
4.1.8 Capacity adjustment range for accuracy of metering, avoid over
sizing of metering pumps.
maximum capacity may produce unacceptable accuracy.
4.1.9 Where lengthy suction and discharge pipelines are involved or there
is limitation on size, install pulsation dampeners close to the pump
to:
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
4.1.10 Ensure that the drain line from any pressure relief valve in the
system is:



4.2

Suction

4.2.1 Piping must be air tight.
4.2.2 For ease of maintenance an isolating valve should be located near the
pump inlet.
4.2.3 Solids should be prevented from entering low volume pumps or
pumps used for high accuracy metering. A strainer of 150-200 mesh
is recommended and should be adequately sized to prevent
restriction of flow.
4.2.4 Suction pipe entrance should be at least 75 mm above the bottom of
solution tank to allow settlement of larger solids in the tank.
4.2.5 Make provision in suction piping where necessary to facilitate
automatic venting of any gases likely to accumulate.
Acro-Smart Electronic Series
Avoid cavitation – maintain metering accuracy.
Reduce amplitude of pulsations
Suitably sized to ensure correct operation of the relief valve.
Returns to the suction tank.
Is fitted with a sight glass for visual indication.
When handling high or low
Flow rates of less than 10% of pump
Acro-Smart Electronic Series
January 2017