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1.4 Technical terms
Technical terms and their meanings
Term Meaning
API Plan Design of the sealing system in accordance with American Petrol Institute (API).
CIP Cleaning in Place.
Liquid slugs Sudden fluctuations of gaseous mixture to pure liquid, or vice versa.
Auxiliary operating system Equipment for pump operation.
Inert gas A gas which is chemically extremely sluggish in reaction and displaces oxygen.
Render inert Addition of inert gas (e.g. nitrogen) in order to displace explosive gases.
Cavitation Development and abrupt dispersion of vapour bubbles in the pumped medium with a local
undercutting of the vapour pressure.
Contamination Poisoning or contamination with harmful substances.
Cooling medium Medium used for flushing pumps, sealing chamber and sliding surfaces.
Pump assembly Pump with drive and base plate.
Pump system Generic term for pump system and pump unit.
Pump system Pump with drive, base plate and controller.
Quenching Sealing system in which the pressure of the quench medium is lower than the pressure of the
pumped medium. The seal is lubricated by the pumped medium.
The quench medium absorbs pumped medium.
Quench medium Medium used for quenching mechanical seals or shaft seals.
SIP Sterilisation In Place.
Sealing Sealing system in which the pressure of the barrier fluid is higher than the pressure of the
pumped medium. The seal is lubricated by the barrier fluid.
The pumped medium absorbs barrier fluid. The pumped medium has no contact with the
atmosphere.
Tips and recommendations
Additional designation
About this manual
8 Type SLH-4U
03/2020 JP Rev. 1
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