Priming Modes
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CP offers both pumps with branch and self-priming pumps.
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CP's self-priming metallic magnetic driven MKP-S pump. |
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Pumps With BranchUsually, pumps have been designed to pump liquids, which mean that they need to have a positive suction pressure. In order to start them successfully, the pumps need to be completely flooded with the liquid to be pumped, and the pumps are not capable of pumping air, gases or vapours not even for limited periods of time. The pumps risk thus to interrupt the liquid flow or to damage the bearings due to dry running when not solely pumping liquid. Today, the pump with branch is CP’s standard priming mode, unavoidable in most pumping systems. These pumps are available: MKP, MKP-Bio, MKPL, MSKP, MSKPP, SZMK, MKPP, MKTP, ED, EB, ET, IL-BTO, ZMP, KTP. |
Self-Priming PumpsSelf-priming pumps are able, even if they have been designed to pump liquids, to pump for a limited period of time mostly air, gases or vapours while building sufficient negative suction pressure. The pumps have thus an ability to transport gas without interrupting the liquid flow or without damaging the bearings due to dry running. This enables to pump from lower heights than where the pump is installed. The maximum self-priming height (geodetic self-priming height) is limited by the achievable vacuum, the local air pressure, the density of the fluid and the flow resistances that have to be overcome. |
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