Discharge Pipe [Outlet Of Vacuum Pump] - Flowserve SIHI dry Standard M Series Instruction & Operation Manual

dry dry dry dry Standard Standard Standard Standard M Series Dry Running Vacuum Pump
SIHI
Issue Date: November 21, 2016
Back Venting: If the rated value in the containers changes at high pressures, it may lead to a backflow
through the vacuum system.
Change the rated value slowly so that the pressure increases as a result of vaporization and leakages
or specific addition of the inert gas.
If required, provide a suction-side (not discharge side) non-return valve, if possible, without spring load.
7.2.3

Discharge Pipe [Outlet of Vacuum Pump]

Attenuators or other sound reducing devices must be provided if the feed is against atmospheric
pressure. The gas outlet should not be closed or covered, otherwise cooling of the gas flow is affected
and the temperature range cannot be maintained.
Undue compression pressure may develop in addition to this.
Discharge Pipe Restriction: Lay pipelines on the delivery side as per nominal sizes of the connection
in particular and if possible even greater. Large volume flows penetrate at high suction pressure and
may form an unduly high counter pressure. Monitor the compression pressure as far as possible.
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